Human capital
a. can be thought of, metaphorically, as the quality of society's textbooks, whereas technological knowledge can be thought of as the time that the population has devoted to reading textbooks.
b. is more tangible than physical capital.
c. is an input in the production of goods and services.
d. is the same as the quantity of labor.
c
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If an economy is allocatively efficient, it must be producing
A) beyond its production possibilities frontier. B) inside its production possibilities frontier. C) on its production possibilities frontier. D) the goods and services that are the most expensive. E) the goods and services that are the least expensive to produce.
Which of the following conditions describes a recessionary gap?
A) The short-run equilibrium level of real GDP is above the long-run level of real GDP. B) The short-run equilibrium level of real GDP is below the long-run level of real GDP. C) The actual interest rate is above the equilibrium interest rate. D) The actual interest rate is below the equilibrium interest rate.
Union membership, in terms of percentage of the U.S. civilian labor force
A) has increased steadily since the passage of the Wagner Act. B) peaked about 1960 and has since declined. C) was over 50 percent in 1987. D) has increased dramatically since 1970.
Refer to the information provided in Figure 9.1 below to answer the question(s) that follow. 
Figure 9.1Refer to Figure 9.1. If this farmer is maximizing profits, his profit will be
A. -$24. B. $45. C. $48. D. $72.