Question

Can someone PLEASE tell me if I'm right?

A computer company uses the function f(h) = 50h + 75 to calculate the total repair bill, f(h), for h number of hours worked. Find h if f(h) = $275.

Is the answer 4 hours?

Answer 1

yes, 4 is the correct answer

275 = 50(h) + 75
200 = 50(h)
h=4

Answer 2

okay, thank you :)

Answer 3

I also need another question checked.

The function d(x) = 3x + 2 determines how many donuts need to be purchased for a meeting, where x is the number of people at the meeting. The office manager uses h(d(x)) to find the amount of money to bring for the donut purchase. The function h(x) = 2x + 7. Solve for how much money to bring when there are 8 people in the meeting.

Is the answer 59?

Answer 4

yes, 59 is correct

d(8) = 3(8) + 2 = 26
h(26) = 2(26) + 7 = 59

Answer 5

thank you :)