Given the following total revenue and total cost functions for a firm maximize profit for the firm as follows 1

Given the following total revenue and total cost functions for a firm, maximize profit ? for the firm as follows (1) Set up the profit function ?=TR-TC ,(2)find the critical value(s) where ? is at a relative extremum and test the second-order condition, and (3) calculate the maximum profit.



TR=1500Q-12Q^2

TC=2000+90Q