Write a function for p(x), the profit from selling x necklaces.

Question

The revenue from selling x necklaces is r(x) = 10x. The cost of buying x necklaces is c(x) = 4x + 15. The profit from selling x necklaces is p(x) = r(x) – c(x)

Answer 1

Hey! Let's solve this shall we ?

Since the revenue from selling x necklaces is r(x) = 10x and the cost of buying x necklaces is c(x) = 4x + 15, the profit function p(x) = r(x) - c(x) yields,

p(x) = r(x) - c(x)

= (10x) - (4x+15)..........Distribute the negative inside to change the signs

= 10x - 4x - 15.........Then add like terms!

p(x) = 6x - 15

I hope this helped!