If a firm pays its workers $10 per hour, the marginal product of labor is 5 units per hour, and the price of the firm's product is $15 per unit, what is the price elasticity of demand facing the firm?

Lower marginal tax rates facilitate a higher return to innovative and risk-taking behavior

a. True b. False

Suppose that production for good X is characterized by the following production function, Q = K0.5L0.5, where K is the fixed input in the short run. If the per-unit rental rate of capital, r, is $15 and the per-unit wage, w, is $25, then the average fixed cost of using 9 units of capital and 81 units of labor is:

A. $75. B. $80. C. $5. D. There is insufficient information to determine the average fixed costs.