Economists generally consider the use of taxes as the most efficient way of solving pollution problems.

Aimee sells hand-embroidered dog apparel over the Internet. Her annual revenue is $128,000 per year, the explicit costs of her business are $42,000, and the opportunity costs of her business are $30,000. What is her economic profit?

A) $12,000 B) $56,000 C) $86,000 D) $98,000

Economists began to lose confidence in the Phillips curve during the:

a. 1930s. b. 1960s. c. 1970s. d. 1980s. e. 1990s.