Question 11 A profit-maximizing monopolist faces a downward sloping demand curve that has a constant elasticity of -4.

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Question 11A profit-maximizing monopolist faces a downward sloping demandcurvethat has a constant elasticity of -4. The firm finds it optimal tocharge aprice of $20 for its output. What is its marginal cost at thislevel ofoutput?A.. $15B. $30C. $25D. $5
Question 12Sandra has a short-run cost function of producing good 1 of c(a) =2q2 +60, where q is the quantity of good 1produced. If she received a price of$40 for each unit of good 1 sold, what is Sandra'sprofit-maximising level of profit assuming that the market isperfectly competitive?A. $0B. $10C. $140D. -$30
Question 13A monopolist has constant marginal cost equal to 10 and faces amarketdemand curve given by the following p = 90 - Q. If the monopolistis aperfect price discriminating monopolist its level of profit will beequal to(assume there is no fixed cost):A. 3200.B.6400.C.800.D. 4000.