(d) \((5\%)\) What are your answers to (a) and (c) when the market demand becomes \(D(P) = 150 - 5P\)?

5. Suppose Max is a profit-maximizing monopoly firm that sells a well-designed chair. The firm faces the demand curve $$P = 28 - 0.5Q$$. I. If the total cost for producing Q units of output is \(\mathrm{TC} = 24 + 1.5\mathrm{Q}^2\). The fixed cost is sunk, and the marginal cost curve is \(\mathrm{MC} = 3\mathrm{Q}\). (a) (6%) How much extra surplus does the producer capture when it can engage in first-degree price discrimination instead of charging a uniform price?

II. If the marginal cost for each chair is \( \mathrm{MC} = \$ 4 \), and there is no fixed cost. Suppose Max wants to improve its profit by implementing block pricing (assuming just 2 blocks), answer the following questions: (b)(6%) Find the profit-maximizing quantity and price for block 1 \((P{1}, Q{1})\) and for block 2 \((P{2}, Q{2})\).

(c)(3%) What's the firm's producer surplus under the two-block tariff in part b?

6. Suppose there are 2 firms in oligopoly market, and the market demand is P = 50 - Q, and MC = 10 + Q₁, i = 1, 2. (a) \((4\%)\) What are the Cournot equilibrium quantities and price in this market?

(b)(3%) What would be the equilibrium price in this market if the two firms acted as a profit-maximizing cartel?

Suppose now the two firms become Stackelberg duopolists in which Firm 1 is a leader and Firm 2 a follower. Assuming that the market demand is the same as before, but the marginal cost for both firms is now MC = $20. If the follower takes the leader's output as fixed at Q₁, answer the following questions: (c) \((6\%)\) What's the Stackelberg equilibrium quantity for each firm? What's the market price?

(d)(4%) What's the profit for each firm?

7. Suppose that the market for corn is initially in equilibrium and is perfectly competitive. The demand curve can be expressed as P = 10 - Qᵈ; the supply curve is P = 0.25Qᵗ. Quantity is expressed in millions of bushels. Now suppose that the federal government imposes a price floor of $3 per bushel of corn. Answer the following questions: (a) \((3\%)\) What is the size of the surplus created by the price floor?

(b)(3%) Assuming the most efficient producers are active, what's the deadweight loss due to the price floor?

(c)(6%) Assuming the least efficient producers are active, what's the producer surplus (PS) under the price floor? What's the deadweight loss due to the price floor?

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