posted by Dan .
A firm with monoply power has the demand curve:
P = 100 - 3Q + 4A^1/2
And has the total cost function:
C = 4Q^2 + 10Q + A
where A is the level of advertising expenditures. P is price, Q is output.
How do I find the values of A, Q, and P that maximize the firm's profit?