A market-day supply curve is

Suppose a monopolist has TC = 40 + 10Q + Q2, and the demand curve it faces is p = 130 - 2Q. What is the Lerner index of this profit-maximizing monopolist?

A) 0.222 B) 0.35 C) 0.444 D) 0.50

What was not a reason for the decline of the Deep South between the Civil War and 1890?

a. Elimination of economies of scale in the production process. b. An extended period of droughts and bad weather. c. Significant withdrawal of labor from the fields, especially by women and children. d. Increased competition from cotton suppliers in other nations.