When the U.S. unemployment rate decreased in the late 1990s, all of the following decreased as well except

Which of the following is a stock variable?

A) money supply B) wealth C) public debt D) all of the above

Use the above table. If the marginal revenue product is $20, how many workers will the profit maximizing monopsonist hire?

A) 1 B) 2 C) 3 D) 4