Wage differentials across individual workers are determined in part by

The price of shrimp is $10.00 per pound and the price of lobster is $15.00 per pound. The marginal utility to Mike of pound of shrimp consumed is 60 utils. If Mike maximizes his satisfaction by consuming both shrimp and lobster, we would expect the marginal utility of the last pound of lobster consumed to equal:

a. 40 utils b. 60 utils c. 90 utils d. 150 utils

The competitive market system:

A. encourages innovation because government provides tax breaks and subsidies to those who develop new products or new productive techniques. B. discourages innovation because it is difficult to acquire additional capital in the form of new machinery and equipment. C. discourages innovation because firms want to get all the profits possible from existing machinery and equipment. D. encourages innovation because successful innovators are rewarded with economic profits.