Which researcher argues that the slave system and its enforcement mechanisms prevented slave individualism from emerging within the system itself?

If a firm has excess capacity, it

A) produces less than its efficient scale. B) should advertise to maximize profits. C) should decrease its markup to increase its profit. D) is a perfectly competitive firm. E) must face a horizontal demand curve.

Suppose that the adult population is 4 million, the number of unemployed is 0.25 million, and the labor-force participation rate is 75%. What is the unemployment rate?

a. 6.25% b. 8.3% c. 9.1% d. 18.75%