The latest demand equation for your "banjos rock t-shirts is given by q -40x + 3600 where is the number of shirts you can sell in one week if you charge x dollars per shirt. when you charge x dollars per shirt, your weekly cost function in dollars) is given by cx) = -900x + 106312.5 (a) find the weekly profit as a function of the price per shirt x. px) (b) determine the unit price you should charge to break even. enter the smaller value first you break even when you charge 33.75 or 78.75 dollars per shirt. when you set the price per shirt to one of these values, your profit is x dollars