One reason purchasing power parity does not exactly hold is that many goods are not traded internationally

President George W. Bush's tax cut in 2001 was a rare example of

a. timely monetary policy. b. timely fiscal policy. c. the slow response of policy to events. d. the inability of Congress to react to policy needs.

In peak-load pricing, once capacity is reached, the firm's short-run marginal cost curve becomes ________.

A) negative B) vertical C) horizontal D) upward sloping