Although the necessary role of government in the economy is highly debated, many people agree that it should

Which of the following explains why the marginal cost curve has a U shape?

A) Initially, the average cost of production rises, then falls. B) Initially, the marginal product of labor falls, then rises. C) Initially, the marginal product of labor rises, then falls. D) Initially, the average product of labor rises, then falls.

Which of the following contributed to the severity of the Great Depression in the 1930s?

a. constant structural changes that created uncertainty and undermined markets b. the Fed's policy of rapid monetary expansion during the early 1930s c. a reduction in tariffs protecting many U.S. industries d. a substantial tax rate reduction, which led to large deficits and high interest rates during the early 1930s