# Economics

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?