The European Monetary Union was formed in 1992 to explore issues regarding currency union under the ________ treaty.

With a human capital investment (such as the investment in going to college), the most important cost tends to be

A) foregone leisure. B) books and equipment. C) the opportunity cost of not working. D) taxes.

If the price of the output produced by a perfectly competitive firm increases, then:

a. the marginal-cost curve will shift up. b. the demand curve faced by the firm will shift to the left. c. marginal cost will fall as output declines. d. the marginal-revenue curve for the firm will shift up. e. the marginal-cost curve for the firm will shift down.