Question

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.

Answer 1

h(d(x)) Basically means this:

Take the equation for d(x) and put in in for x in the h(x) So:


So this is the equation for the amount of money.

Now we just plug in 8 for x and we have our answer!