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Mathematics 66 Online
OpenStudy (anonymous):

Jake earns $7.50 per hour working at a local car wash. The function, ƒ(x) = 7.50x, relates the amount Jake earns to the number of hours he works. Write the inverse of this relation

OpenStudy (anonymous):

Make f(x) = y. So you have y = 7.50x.. Now swap x and y and solve for y. That will be the inverse.

OpenStudy (anonymous):

i dont get it

OpenStudy (anonymous):

Your function is f(x) = 7.50x. To find the inverse of a function you first make f(x) =y. So our formula now looks like y = 7.50x To find the inverse you swap the x and the y. So the equation now looks like x=7.50y. Do you see how I got there?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Now you have to show the equation as y = (a value for x). So if x=7.50y then y=(what value for x??) In otherwords what does x equal in terms of y?

OpenStudy (anonymous):

7.50

OpenStudy (anonymous):

x = 7.50 y so what would (?)x = 1 y

OpenStudy (anonymous):

i dont get it

OpenStudy (anonymous):

7.50x=1y

OpenStudy (anonymous):

In x=7.50y. What happens if you divide both sides by 7.50?

OpenStudy (anonymous):

=1

OpenStudy (anonymous):

\[\frac{ x }{ 7.50} = y\]

OpenStudy (anonymous):

Do you see how I got this? I divided both sides of the equation by 7.50. The key to inverse solution is you have to find the value of y in terms of x.

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

The answer is y=x/7.50

OpenStudy (anonymous):

low temperature 26 28 30 32 34 35 37 38 41 45 High Temperature, y 49 50 57 54 60 58 64 66 63 72 A) What is the correlation for a linear model of this data? Round to the nearest hundredth.B) Ten high and low temperatures in October are recorded and have a correlation coefficient of 0.89. In which month is there a stronger correlation between the high and low temperatures? Explain your answer.

OpenStudy (anonymous):

@Phebe

OpenStudy (phebe):

im here wat u need

OpenStudy (anonymous):

low temperature 26 28 30 32 34 35 37 38 41 45 High Temperature, y 49 50 57 54 60 58 64 66 63 72 A) What is the correlation for a linear model of this data? Round to the nearest hundredth.B) Ten high and low temperatures in October are recorded and have a correlation coefficient of 0.89. In which month is there a stronger correlation between the high and low temperatures? Explain your answer.

OpenStudy (phebe):

ok hold on

OpenStudy (phebe):

ui think its B

OpenStudy (anonymous):

its not a multiple choice

OpenStudy (phebe):

ohhh

OpenStudy (phebe):

well jus follow the directions cuz lol im trying to get sum help too

OpenStudy (anonymous):

ok

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