Jeremiah answers 90% of the questions on his test correctly. There are 40 questions on the test. Correct Test Questions
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
StartFraction 1 over 10 EndFraction
StartFraction 1 over 10 EndFraction
StartFraction 1 over 10 EndFraction
StartFraction 1 over 10 EndFraction
StartFraction 1 over 10 EndFraction
StartFraction 1 over 10 EndFraction
StartFraction 1 over 10 EndFraction
StartFraction 1 over 10 EndFraction
StartFraction 1 over 10 EndFraction
StartFraction 1 over 10 EndFraction
4
4
4
4
4
4
4
4
4
4

Jeremiah writes the expression 40 minus (StartFraction 1 over 10 EndFraction times 40) to determine the number of questions answered correctly. Which is an equivalent expression?
StartFraction 9 over 10 EndFraction times 40
40 minus 36
(StartFraction 1 over 10 EndFraction times 40) minus 40
(40 minus StartFraction 1 over 10 EndFraction) times 40

For problems 7–10, state a reasonable domain for the problem statement, find the inverse functionf –1(x), and identify the independent and dependent quantities of the inverse. gary is jogging. the total distance he has traveled, in miles, can be estimated using the functionf(x) = 9x, where x is his jogging time in hours. camryn sells computers. she earns commission for her computer sales plus a fixed wage for each day she works. her daily earnings, in dollars, can be estimated using the functionf(x) = 0.15x + 50, where x represents her computer sales in dollars. the distance a motorboat travels, in meters, can be estimated using the equation f(x) = 1.9x2, wherexisthetimeinseconds, for0≤x≤10. a rock band is selling tickets to a concert at a theater. the band earns money for each ticket sold, but has to pay some of the earnings to the theater. the total money earned by the band can be estimated using the function f(x) = 7.5x – 300, where x is the number of tickets sold.