Does the following scenario model the equation y=2x+5 ?
there are initially 5 chickens on the farm. Each month thereafter the number of chickens is 2 times the number in the month before.
Answers
Answer:
no
Step-by-step explanation:
this is incorrect because it will not be double every month.
Related Questions
Mrs. Clark's plant is 4 3/4 inches tall. It is 1 7/8 inches taller than Jimmy's plant.
How tall is Jimmy's plant?
Answers
Explanation: Change 4 3/4 into 4 6/8. 4+1 = 5 and 6/8 + 7/8 =1 5/8. 1 5/8 + 5 = 6 5/8 inches tall.
Hope this helps!
Find the other endpoint of the line segment with the given endpoint -5, 2 and midpoint 2, -5
Answers
Answer:
( 9, -12 )
Step-by-step explanation:
Mario's Math Tutoring
you have the midpoint
2, -5
use the midpoint formula
(x1+x2)/2 , (y1+y2)/2
to get the endpoint
x :
(-5+x2)/2 = 2
(-5+x2) = 4
-5+x2 = 4
x2 = 9
y:
(2+y2)/2 = -5
(2+y2) = -10
2+y2 = -10
y2 = -12
Thank you Mario!
if we change a 90% confidence interval estimate to a 95% confidence interval estimate, the width of the confidence interval will
Answers
If we change an estimate with a 95% confidence interval to one with a 99% confidence interval, (A) we can expect the width of the confidence interval to widen.
What is a confidence interval?We have a 5% probability of being incorrect with a 95% confidence interval.
We have a 10% probability of being incorrect with a 90% confidence interval.
A 95% confidence interval is narrower than a 99% confidence interval (for example, plus or minus 4.5 percent instead of 3.5 percent).
We can anticipate an increase in the width of the confidence interval if we convert an estimate with a 95% confidence interval to one with a 99% confidence interval.
The 68-95-99.7 Rule states that 95% of values fall within two standard deviations of the mean, hence to calculate the 95% confidence interval, you add and subtract two standard deviations from the mean.
Therefore, if we change an estimate with a 95% confidence interval to one with a 99% confidence interval, (A) we can expect the width of the confidence interval to widen.
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Complete question:
If we change a 95% confidence interval estimate to a 99% confidence interval estimate, we can expect the _____.
a. width of the confidence interval to increase
b. width of the confidence interval to decrease
c. width of the confidence interval to remain the same
d. sample size to increase
A store notices that a particular item in stock is never sold. This item could potentially make the store $7,862 daily, so the store manager begins an advertising campaign. On day 15 of the campaign, the store makes $3,547 in sales of this item. Assume the increase in sales follows the pattern of Newton's Law of Cooling (Heating). How many days of campaigning will it take for the store to make at least $5,039 from a single day of sales of this item?a) 24 days b) 20 days c) 29 days d) 26 days
Answers
The amount of sales per day of a particular item in a store is given by an equation of the form:y(t) = k + Ce^(-rt)where k is the equilibrium level of sales, C is the initial deviation from equilibrium (in dollars per day), r is the rate constant, and t is the time elapsed in days.
The correct option is C.
Newton's Law of Cooling (Heating) assumes that the rate of change of the temperature (sales in this case) is proportional to the difference between the temperature (sales in this case) and the surrounding temperature (equilibrium sales in this case).On the first day of advertising, sales were 0, so the equation becomes:
0 = k + C(1)
k = -CThe second day of advertising saw sales of $3,547, so the equation becomes:
3,547 = -C + Ce^(-r*15)3,547 +
C = Ce^(-15r)Divide both sides by
C:e^(-15r) = (3,547 + C)/CNow take the natural logarithm of both sides, which will isolate the exponent: ln
(e^(-15r)) = ln((3,547 + C)/C)-15
r = ln((3,547 + C)/C)Divide both sides by -15:
r = -(1/15)ln((3,547 + C)/C)Plug in
C = $7,862, which is the potential daily income from this item in stock:
r = -(1/15)ln((3,547 + 7,862)/(7,862))
r = -0.0806Now we need to solve for t when
y(t) = $5,039. That is:
5,039 = -7,862 + 7,862e^(-0.0806t)Add 7,862 to both sides:
12,901 = 7,862e^(-0.0806t)Divide both sides by 7,862:e^
(-0.0806t) = 1.6401Take the natural logarithm of both sides, which will isolate the exponent
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minimize f(x) = |x+3| + x^3 S.t. x sum [-2, 6]
Answers
Minimization of f(x) = |x+3| + x^3 at the endpoints (-2 and 6) the minimum value of the function is approximately 3.84, which occurs at x= \sqrt{1/3}
within the given interval.
To minimize the function subject to the constraint f(x) = |x+3| + x^3 that x lies in the interval [-2, 6], we need to find the value of x that minimizes f(x) within that interval.
First, let's analyze the function f(x). The absolute value term |x+3| can be rewritten as:
|x+3| =
x+3 if x+3 >= 0
-(x+3) if x+3 < 0
Since the interval [-2, 6] includes both positive and negative values of x+3, we need to consider both cases.
Case 1: x+3 >= 0
In this case, f(x) = (x+3) + x^3 = 2x + x^3 + 3
Case 2: x+3 < 0
In this case, f(x) = -(x+3) + x^3 = -2x + x^3 - 3
Now, we can find the minimum of f(x) within the given interval by evaluating the function at the endpoints (-2 and 6) and at any critical points within the interval.
Calculating the values of f(x) at x = -2, 6, and the critical points, we can determine the minimum value of f(x) and the corresponding value of x.
Since the equation involves both absolute value and a cubic term, it is not possible to find a closed-form solution or an exact minimum value without numerical methods or approximation techniques.
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Your hotel sells four types of rooms: double queen beds for $120/night; king bed for $140/night; junior suite for $210 and luxury suite for $320. Your accountant advises a 3% increase on all rooms. What will the new average room rate be? Assume an equal number of rooms for each room type
a) $120
b) $197
c) $203
d) $220
Answers
Answer:
its b lol
Step-by-step explanation:
Answer is 203.
Average:
The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set.
Given,
For double queen beds increment is $120 x 3% => $120 x (3/100) => 3.6.
The total rate for double queen beds = $120 + $3.6 = $123.6
For king beds increment is $140 x 3% => $140 x (3/100) => 4.2
The total rate for double queen beds = $140 + $4.2 = $144.2
For junior suite increment is $210 x 3% => $210 x (3/100) => 6.3
The total rate for junior suite = $210 + 6.3 = $216.3
For luxury suite increment is $320 x (3/100) => 9.6
The total rate for luxury suite = $320 + 9.6 = $329.6
The average rate = ($123.6 + $144.2 + $216.3 + $329.6) / 4
=> $203.425 i.e., $203
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In the figure there are 5 equal rectangles and each of its sides is marked with a number as indicated in the drawing. Rectangles are placed without rotating or flipping in positions I, II, III, IV, and V in such a way that the sides that stick together in two rectangles have the same number. Which of the rectangles should go in position I?
Answers
The rectangle which should go in position I is rectangle A.
We are given that;
The rectangles A,B,C and D with numbers
Now,
To take the same the number of side
If we take A on 1 place
F will be on second place
And B will be on 4th place
Therefore, by algebra the answer will be rectangle A.
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Find an equation of the line that satisfies the given conditions. Through (-9, -11); perpendicular to the line passing through (-6, 1) and (-2, -1)
Answers
The equation of the line that satisfies the given conditions is y = 2x + 7.
To find the equation of a line that is perpendicular to another line, we need to determine the slope of the given line and then find the negative reciprocal of that slope.
First, let's find the slope of the line passing through (-6, 1) and (-2, -1). Using the formula:
slope = (y2 - y1) / (x2 - x1),
we have:
slope = (-1 - 1) / (-2 - (-6)) = -2 / 4 = -1/2.
The negative reciprocal of -1/2 is 2. This will be the slope of the line perpendicular to the given line.
Now, we have the slope (m = 2) and a point (-9, -11) that the line passes through. We can use the point-slope form of the equation:
y - y1 = m(x - x1),
where (x1, y1) is the given point. Substituting the values, we get:
y - (-11) = 2(x - (-9)),
y + 11 = 2(x + 9),
y + 11 = 2x + 18,
y = 2x + 7.
Therefore, the equation of the line that satisfies the given conditions is y = 2x + 7.
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A wise man once said "500 reduced by 3 times my age is 218." What is his age?
The wise man is
years old.
Answers
Answer:
94
Step-by-step explanation:
What is the difference between the population and sample regression functions? Write out both functions, and explain how they differ. (b) What is the role of error term u
i
in regression analysis? What is the difference between the error term u
i
and the residual,
u
^
i
? (c) Why do we need regression analysis? Why not simply use the mean value of the regressand as its best value? (d) What does it mean for an estimator to be unbiased? (e) What is the difference between β
1
and
β
^
1
? (f) What do we mean by a linear regression model? (g) Determine whether the following models are linear in parameters, linear in variables or both. Which of these models are linear regression models? (i) Y
i
=β
1
+β
2
(
x
i
1
)+u
i
(ii) Y
i
=β
1
+β
2
ln(X
i
)+u
i
(iii) ln(Y
i
)=β
1
+β
2
X
i
+u
i
(iv) ln(Y
i
)=ln(β
1
)+β
2
ln(X
i
)+u
i
(v) ln(Y
i
)=β
1
−β
1
(
λ
i
1
)+u
i
Answers
Regression function and sample regression function are mathematical representations used in regression analysis.An estimator is unbiased if its expected value is equal to the true value of the population parameter.
The population regression function and sample regression function are mathematical representations used in regression analysis. The population regression function represents the relationship between the dependent variable and independent variables in the entire population, while the sample regression function estimates this relationship based on a sample from the population.
The error term u_i represents the unobservable factors that affect the dependent variable in regression analysis. It captures the random and unexplained variability in the relationship between the variables. The difference between the error term u_i and the residual u_hat_i is that the error term is the true value that cannot be observed, while the residual is the difference between the observed and predicted values of the dependent variable.
Regression analysis is needed to estimate and understand the relationship between variables, identify significant factors, and make predictions. Using the mean value of the regressand as its best value would not capture the variability and the influence of other independent variables, limiting the accuracy and reliability of predictions.
An estimator is unbiased if its expected value is equal to the true value of the population parameter being estimated. In other words, on average, the estimator does not overestimate or underestimate the parameter.
β_1 represents the true population parameter, while β_1_hat represents the estimated parameter based on sample data. The hat symbol indicates that β_1_hat is an estimate of the true parameter.
A linear regression model assumes a linear relationship between the dependent variable and the independent variables. It means that the relationship can be represented by a straight line equation.
(i) Both linear in parameters and variables, (ii) Linear in parameters but nonlinear in variables, (iii) Linear in parameters and variables, (iv) Nonlinear in parameters and variables, (v) Linear in parameters but nonlinear in variables. Only models (i) and (iii) are linear regression models because they satisfy the linearity condition in parameters.
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Please explain what answer is it. And how do u show the work
Answers
The equation for the constant of proportionality is k=y/x. It shows the unit rate (ratio) of a proportional relationship between two given values.
The three ways to write a 5 to 8 ratio are: 5/8, 5:8, and “5 to 8.”
So, the answer is A. 5/8
HELP, PLEASE ANSWER ALL <3
Answers
Step-by-step explanation:
please take the picture good ok
What is the value of x? Round to the nearest tenth.
Answers
Answer:
x=7.5
Step-by-step explanation:
first find the hypotenuse of the first right angles triangle a^2+b^2=c^2. 4^2+3^2=squareroot 25 (5)that 5 is the height of the second right angled triangle thus c^2-a^2=b^2. 9^2-5^2= 56 (squareroot is 7.48) round off 7.48 to the nearest tenth which is 7.5 since the hundredths value is more than 5hence answer is 7.5Part A: What is the approximate y-intercept of the line of best fit and what does it represent? (5 points)
Part B: Write the equation for the line of best fit in the slope-intercept form and use it to predict the number of matches that could be won after 13 months of practice. Show your work and include the points used to calculate the slope. (5 points)
Answers
Answer:
Let's actually find the line of best fit...
m=(nΣyx-ΣyΣx)/(nΣx^2-ΣxΣx)
m=(11*836-130*55)/(11*385-3025)
m=2046/1210
m=93/55
b=(Σy-93Σx/55)/n
b=(55Σy-93Σx)/(55n)
b=(7150-5115)/(55*11)
b=185/55, so the line of best fit is:
y=(93x+185)/55
A) The approximate y-intercept (the value of y when x=0) is 185/55≈3.36.
Which means that those who do not practice at all will win about 3.36 times
B) y(13)=(93x+185)/55
y(13)≈25.34
So after 13 months of practice one would expect to win about 25.34 times.
A total of 46 percent of the voters in a certain city classify themselves as Indepen-dents, whereas 30 percent classify themselves as Liberals and 24 percent say thatthey are Conservatives. In a recent local election, 35 percent of the Independents,62 percent of the Liberals, and 58 percent of the Conservatives voted. A voter ischosen at random. Given that this person voted in the local election what is theprobability that he or she is
Answers
Complete question :
A total of 46 percent of the voters in a certain city classify themselves as Indepen-dents, whereas 30 percent classify themselves as Liberals and 24 percent say thatthey are Conservatives. In a recent local election, 35 percent of the Independents,62 percent of the Liberals, and 58 percent of the Conservatives voted. A voter ischosen at random. Given that this person voted in the local election what is theprobability that he or she is Given that this person voted in the local election, what is the probability that he or she is (a) an Independent? (b) a Liberal? (c) a Conservative? (d) What fraction of voters participated in the local election?
Answer:
A) 0.331 ; B) 0.383 ; C) 0.286 ; D) 0.4862
Step-by-step explanation:
Given the following :
P(Independent(I)) = 46/100 = 0.46
P(Liberal(L)) = 30/ 100 = 0.3
P(Conservative(C)) = 24 / 100 = 0.24
Election participation (EP) :
P(EP | I) = 35 / 100 = 0.35
P(EP | L) = 62/100 = 0.62
P(EP | C) = 58/100 = 0.58
P(EP) = P(EP | L)*P(L) + P(EP | I)*P(I) + P(EP | C)*P(C)
P(EP) = (0.62*0.3) + (0.35*0.46) + (0.58*0.24)
P(EP) = 0.186 + 0.161 + 0.1392 = 0.4862
A) probability of Independent given that the person participated in election:
P(I Given EP) = [P(EP | I) * P(I)] / P(EP)
= (0.35 * 0.46) / 0.4862
= 0.161 / 0.4862
= 0.331
B) probability of Liberals given that the person participated in election:
P(L Given EP) = [P(EP | L) * P(L)] / P(EP)
= (0.62 * 0.3) / 0.4862
= 0.186 / 0.4862
= 0.383
C.) P(C Given EP) = [P(EP | C) * P(C)] / P(EP)
= (0.58 * 0.24) / 0.4862
= 0.1392 / 0.4862
= 0.286
Giving brainlist to whoever answers this question
Answers
Answer:3x +56
Step-by-step explanation:
does anyone listen to NF like the rapper? just wanna know :D
Answers
No I don't, I never really heard any music from them, but that doesn't mean you can't like that type of music.
Anyway have a nice day! :D
Yes, I love NF's music. I especially love his song "Mansion" because the lyrics are profound and deep; it really resonates with me. All in all, I love all, if not most, of his songs, and I can play them on repeat. I can't wait for him to release new music. I hope he garners more attention because he's really underrated.
In a circle, an angle measuring 2.4 radians intercepts an arc of length 24.4. Find the radius of the circle to the nearest
Answers
The radius of the circle is approximately 10.17 units (rounded to two decimal places).
To find the radius of the circle, we need to use the formula that relates the central angle to the length of the arc and the radius of the circle. The formula is given as:
arc length = radius x central angle
In this case, the arc length is given as 24.4 and the central angle is given as 2.4 radians. Substituting these values in the formula, we get:
24.4 = r x 2.4
Solving for r, we get:
r = 24.4 / 2.4
r ≈ 10.17
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we need to survey a random sample of the 300 passengers on a flight from san francisco to tokyo. you randomly select a seat position (right window, right center, right aisle, etc.) and survey all the passengers sitting in those seats. what sampling technique best describes the process here?
Answers
The sampling technique best described here is systematic sampling. Systematic sampling is a type of probability sampling in which the elements in the population are selected in a systematic way
This sampling technique is used when the population size is too large to survey the entire population. In this example, the population size is 300 passengers and the sampling interval is determined by dividing the population size by the sample size. For example, if the sample size is 30, the sampling interval is\(10 (300/30=10).\) This means that every 10th passenger is randomly selected for the survey. The selection starts with a randomly chosen passenger and then the ninth passenger after that is selected and so on. The formula for Systematic sampling is n = N/n, where N is the population size and n is the sample size.
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What is a Type II Error?
Answers
A Type II Error, also known as a "false negative," is a statistical term used in hypothesis testing. In hypothesis testing, we start with two competing hypotheses: the null hypothesis (H0) and the alternative hypothesis (Ha).
The goal of hypothesis testing is to determine which hypothesis is more likely to be true given the data. A Type II Error occurs when we fail to reject the null hypothesis when it is actually false. In other words, we incorrectly conclude that the null hypothesis is true when it is actually false.
For example, consider a medical test for a certain disease. The null hypothesis is that the patient does not have the disease, and the alternative hypothesis is that the patient does have the disease.
If the test results are negative (i.e., the patient does not have the disease), and the patient actually does have the disease, then we have made a Type II Error.
The probability of making a Type II Error is represented by the Greek letter β (beta). A common goal in hypothesis testing is to keep the probability of making a Type II Error as low as possible, while also keeping the probability of making a Type I Error (false positive) low as well.
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100 POINTS, PLEASE HELP, WILL GIVE BRAINLEIST
The graph represents a relation where x represents the independent variable and y represents the dependent variable.
What is the domain of the relation?
{−3, −2, −1, 0, 1, 2, 4}
{−3, 0, 1, 4}
{−2, −1, 0, 1, 4}
{−3, −1, 0, 2, 4}
Answers
Answer: { -3, -1, 0, 2, 4}
Step-by-step explanation:
the domain is the x values of ordered pairs
What is the perimeter
Answers
Answer:
81
Step-by-step explanation:
Add all of the together to find how much they all equal. 27x3 = 81
Answer:
let f(x)=3x-4 and g(x)=x+3x.find(gof)(1),please help with these math questions just by saying "yes yes no no no" etc in the comments. brainliest for correct answer
Answers
Answer:
1: No
2: Yes
3: No
4: No
5: No
I hope this helps!
Step-by-step explanation:
You can buy 5 cans for green beans at the Village Market for $3.60. You can buy 10
of the same cans of beans at Sam's Club for $4.90. Which place is the better buy?
Answers
Answer:
Sams Club
Step-by-step explanation:
Sam's club because you can buy 10
It take 4 people 40 minutes to clean a garden. How long will it take 6 people to clean the same garden
Answers
Answer:
4/9 of an hour (26.666 minutes)
Step-by-step explanation:
4 * x * 40/60 = 1
x * 160/60 = 1
x=60/160 = 6/16 = 3/8 (this is the rate for one worker)
~~~~~~~~~~~~~~~~
6 * (3/8) * x = 1
x = 4/9
Analyzing Loops. Let n and b be positive integers such that n>b>1. Consider the three loops below. Loop1 (n) while n>50 n←n/b 2
endwhile Loop2 (n)
m←−10n while n>m n←n−b endwhile m←2 n
Loop3(n)
while n
n. Is it Ω(log 2
n) ? θ(log 2
n) ? or O(log 2
n) ? iii. (0.5 pts.) Finally, when b=2, which loop(s) has the fastest running time (i.e., it ends the earliest)?
Answers
When b is equal to 2, Loop2 has the fastest running time.
The running time of Loop1, Loop2, and Loop3 can be analyzed as follows:
1. Loop1: The loop continues as long as n is greater than 50 and divides n by b in each iteration. This operation reduces n by a factor of b in every iteration until it becomes less than or equal to 50. The number of iterations can be represented as log base b of n. Therefore, the running time of Loop1 is O(log base b of n).
2. Loop2: This loop subtracts b from n repeatedly until n becomes less than or equal to m, which is -10n. Since the loop continues until n is reduced to a value less than m, the number of iterations can be represented as n/b. The running time of Loop2 is O(n/b).
3. Loop3: This loop divides n by b until n becomes less than or equal to 1. The number of iterations required can be represented as log base b of n. Therefore, the running time of Loop3 is O(log base b of n).
When b is equal to 2, the running time of Loop1 and Loop3 is O(log base 2 of n). However, the running time of Loop2 is O(n/2), which is equivalent to O(n). Therefore, when b is 2, Loop2 has the fastest running time and ends the earliest among the three loops.
In summary, the running time of Loop1 and Loop3 is θ(log base b of n), and the running time of Loop2 is O(n). When b is equal to 2, Loop2 has the fastest running time.
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plz fast plzzzzzzzz
Answers
Step-by-step explanation:
cubing both sides (p+1)^3= (7)^3
=> p^3+1/p^3+ 3(p+1/p) = 343
=> p^3+ 1/p^3 + 3(7)= 343
=> p^3+1/p^3= 343-21
=> p^3+1/p^3= 322
hope it helps
Barry wants to make a drawing that is 1/2 the size of the original. If a tree in the original drawing is 11 inches tall and 5 inches wide,
Answers
Answer:
Barry's drawing is 5.5 in tall and 2.5 in wide.
Step-by-step explanation:
We are given that
Height of tree, h=11 in
Width of tree, b=5 in
We have to find the size of the original.
Size of drawing is 1/2 size of the original
Therefore,
Height of drawing, h'=\(\frac{1}{2}\times 11\)in
Height of drawing, h'=5.5 in
Width of drawing tree=\(\frac{1}{2}\times 5\)
Width of drawing tree=\(2.5in\)
Hence, Barry's drawing is 5.5 in tall and 2.5 in wide.
Graph each quadratic function. State the domain and range. Also include a chart.
Answers
We can construct a chart, a table for the values of the given function as follows:
1. We need to have the function g(x) = -4x^2.
2. We can obtain the values for the function for the values:
x = -4, x = -2, x = 0, x = 2, x = 4.
3. We need to evaluate the function for each of these values.
4. Finally, we can have a table of the values of x and y.
Having this information into account, we can proceed as follows:
1. x = -4
\(f(-4)=-4(-4)^2=-4\cdot(16)=-64\Rightarrow f(-4)=-64\)2. x = -2
\(f(-2)=-4(-2)^2=-4(4)\Rightarrow f(-2)=-16\)3. x = 0
\(f(0)=-4(0)^2=-4\cdot0\Rightarrow f(0)=0\)4. x = 2
\(f(2)=-4(2)^2=-4\cdot4\Rightarrow f(2)=-16\)5. x = 4
\(f(4)=-4(4)^2=-4\cdot16\Rightarrow f(4)=-64\)Then, having these values, we can construct the values for the function using these values:
We can draw part of this function using these values. We have to remember that, in functions, we can say that y = f(x).
We can also say that the domain of the function is, in interval notation:
\((-\infty,\infty)\)And the range, as we can see from the values, is as follows (using interval notation):
\((-\infty,0\rbrack\)This is because the values for y (or f(x)) are less or equal to zero.
In summary, we can have a table to construct a graph using the values for the independent variable and plug these values in the function to obtain the values for y.
We need to remember that y = f(x). Additionally, this function has a domain from -infinity to infinity (all the values in the Real set), and a range for values from -infinity to 0 (including zero).
A graph for this function is as follows:
what is the nearest tenth to the square root of 46
PLEASE HELP
Answers
Answer:
6.8
Step-by-step explanation:
This is the answer because:
1) The square root of 46 is 6.78232998...
2) The nearest tenth of this is 6.8 because we have to round 7. Since 8 is greater than 5, we have to round 7 up.
Therefore, the answer is 6.8
Hope this helps! :D