simplify expression

Question

A computer part costs six dollars to produce and distribute. Express the profit (p) made by selling 800 of the parts as a function of the price of (c) dollars each.

Answer 1

Profit = Price - Cost so the profit for 1 part is c - 6 so the profit for 800 parts is  

 

p = 800*(c - 6) = 800*C - 4800