This questions

1) Explain why a monopoly or a perfectly competitive firm does not consider a rival firm's behavior, but an oligopoly and a monopolistically competitive firm do. 2) The above figure shows the market for a given product. Defining welfare as consumer surplus plus producer surplus, calculate the social welfare associated with perfect competition, single-price monopoly, and a perfect-price-discriminating monopoly. Which market structure(s) maximize social welfare? 3) Suppose the demand for pizza in a small isolated town is p = 10 - Q. There are only two firms, A and B, and each has a cost function TC = 2 + q. Determine the Cournot equilibrium. 4) Suppose the demand for pizza in a small isolated town is p = 10 - Q. There are only two firms, A and B. Each has a cost function TC = 2 + Q. Determine the equilibrium quantities of each if firm A is the Stackelberg leader. 5) Why does a monopsonist's marginal expenditure curve lie above the labor supply curve? SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. For the following, please answer "True" or "False" and explain why. 6) If the price of a competitive firm's output increases, the firm responds in the short run by demanding more labor