Many regulated industries are not pure monopolies.

During the 1930s,

a. ordinary citizens were not allowed to hold gold. b. the US government fixed the price at which the Treasury would by and sell gold. c. production of gold soared. d. All of the above are correct. e. Only a and b are correct.

A firm has a fixed cost of $500 in its first year of operation. When the firm produces 100 units of output, its total costs are $3,500 . When it produces 101 units of output, its total costs are $3,750 . What is the marginal cost of producing the 101st unit of output?

a. $250 b. $275 c. $340.91 d. $350