Im trying to help a friend with a business calculus problem but it has been about 7 years since i have taken any kind of math class and am drawing a blank. Could anyone help me out here so I can explain this to my friend?

You are a book publisher and in order to sell "q" thousand new novels each month, the price "p" must be sqrt(1152-4q^2) dollars. How many novels must be sold each month to maximize your revenue and what must the price of each novel at that sales level be?

I know this is a pretty simple take the derivative and find the max kind of problem but its been so long I'm having trouble remembering where to get started on this. Any help will be appreciated. Thanks!