The manager estimates that the total revenue from the sale of her firm's product is given by the equation TR = Q^2/2 and the total cost function is estimated to be TC = 5000+60Q+Q^2

A. What are the profit-maximizing levels of price and output?
B. Find the maximum economic profit.
C. What is the output rate for which average cost is minimized? At this output rate, what is the amount of economic profit?