Roughly speaking, the estimated return to a year of education in the United States is roughly

As of 2005 the European Union had:

a. 5 members. b. 15 members. c. 25 members. d. 40 members.

A competitive firm maximizes its profits (or minimizes is losses) by producing the quantity where the market price equals the firm's:

a. marginal cost. b. average total cost. c. average variable cost. d. average fixed cost.