Refer to the information provided in Figure 7.3 below to answer the question(s) that follow. 
Figure 7.3Refer to Figure 7.3. The marginal product of the first worker is ________ yards raked.
A. 10
B. 13.5
C. 17
D. 27
Answer: A
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Suppose farmers in a given market can either grow soy beans or corn on their land. In addition, suppose an increase in the demand for corn causes the price of corn to increase. All else equal, an increase in the price of corn creates an incentive for farmers to:
A. switch away from growing soy beans and into growing corn. B. switch away from growing corn and into growing soy beans. C. grow less corn, but not change their production of soy beans. D. grow more corn, but not change their production of soy beans.
If net foreign investment in the United States is positive, how must national saving and domestic investment be related? (Assume that the capital account is zero and net transfers are zero.)
A) Domestic investment can be greater than or less than national saving. B) Domestic investment must be greater than national saving. C) Domestic investment must be less than national saving. D) Domestic investment and national saving must also be positive.
The U.S. central bank ________
A) usually raises taxes to stabilize a slowing economy B) encourages higher savings rates by raising the national sales tax C) is known as the Federal Reserve D) all of the above E) none of the above
For computers and other business equipment, small changes in business earnings tend to generate relatively large short-run changes in the demand for this equipment, and the long-run income response tends to be smaller
Industries that face demand behavior of this type are known as: A) natural monopolies. B) cartels. C) cyclical industries. D) constant-cost industries.