Question 2 (4 points)
write a profit equation given the following cost and revenue functions:
r(x) = 36x - x2
c(x) = 9x + 120
use your profit equation to determine the profit/loss if the number of units sold/produced is 50.
bi u
= =
s s, g
1
2

Evaluate the following expression 1/3^2

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?

Solve for x and select the correct answer