Kate and Alice are small-town ready-mix concrete duopolists. The market demand function is Qd = 20,000 - 200P, where P is the price of a cubic yard of concrete and Qd is the number of cubic yards demanded per year. Marginal cost is $80 per cubic yard. The Cournot model describes the competition in this market. If Kate produces 10,000 cubic yards per year, what is Alice's inverse demand function?

Interlace, Inc produces and a unique soda. The company cannot price discriminate. The figure above shows Interlace's demand curve, marginal revenue curve, and marginal cost curve. Interlace's profit maximizing price is ________ per bottle

A) 70 cents B) 50 cents C) 40 cents D) 1 dollar

During the Black Plague, capital became worthless. What can explain this?

A) Capital's marginal product fell because there was less labor. B) Capitalists died off at a greater rate than the workers. C) Capital's marginal product increased but the marginal product of labor decreased. D) Workers forgot how to use the capital.