able below shows the marginal revenue and costs for a monopolist. Demand, Costs, and Revenues Price (dollars) Quantity Demanded Marginal Revenue (dollars) Marginal Cost (dollars) Average Total Cost (dollars) $76 100 $76 $25 $139.00 71 200 66 68 103.30 66 300 56 56 87.50 61 400 46 82 86.00 56 500 36 76 84.00 51 600 26 48 78.00 Instructions: Enter your answer as a whole number. If you are entering a negative number include a minus sign. a. What is the monopolist's profit-maximizing level of output

1. consider a two-firm industry. firm 1 (the incumbent) chooses a level of output qı. firm 2 (the potential entrant) observes qı and then chooses its level of output q2. the demand for the product is p 100 q, where q is the total output sold by the two firms which equals qi +q2. assume that the marginal cost of each firm is zero. a) find the subgame perfect equilibrium levels of qi and q2 keeping in mind that firm 1 chooses qi first and firm 2 observes qi and chooses its q2. find the profits of the two firms-n1 and t2- in the subgame perfect equilibrium. how do these numbers differ from the cournot equilibrium? b) for what level of qi would firm 2 be deterred from entering? would a rational firm 1 have an incentive to choose this level of qi? which entry condition does this market have: blockaded, deterred, or accommodated? now suppose that firm 2 has to incur a fixed cost of entry, f> 0. c) for what values of f will entry be blockaded? d) find out the entry deterring level of q, denoted by q1', a expression for firm l's profit, when entry is deterred, as a function of f. for what values of f would firm 1 use an entry deterring strategy?