Question 3 Suppose a market demand function is given by QD(P) = 1,000 - 10P. The product can be produced with a cost function C(Q) = 10,000 + 20Q. (a) Determine Q and P and the firm's profit if there is a single firm. (b) Determine total output Q, the equilibrium price, and the profit of each firm if there are two firms (i.e., a Cournot oligopoly). (e) Determine Q, the equilibrium price, and the profit of each firm if there are 10 firms