# Thread: Revenue and cost function.

1. ## Revenue and cost function.

The total revenue function of affirm is given as R=21q – q2. The total cost function is C=5q3 + 10q2 +15q + 200 where q is the out put. Find the out put at which total revenue is maximum & total cost is minimum.

2. ## Re: Revenue and cost function.

Did you try to solve R'=0 and C'=0?