Refer to the information provided in Figure 8.3 below to answer the question(s) that follow. 
Figure 8.3
Refer to Figure 8.3. The marginal cost of the ninth basketball is
A. less than $2.
B. $2.
C. $3.
D. greater than $3.
Answer: A
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In terms of Social Security taxes, the self-employed pay
A. only the employee portion. B. both the employee and employer portions. C. only the employer portion. D. no tax.
The fact that wants cannot be fully satisfied with available resources reflects the definition of
A) the what tradeoff. B) scarcity. C) the big tradeoff. D) for whom to produce.
Which of the following is true of home mortgage loans since the late 1990s?
a. Government regulations required homebuyers to make larger down payments in order to obtain a mortgage. b. Traditional fixed-rate, long-term mortgages grew in popularity. c. There was a substantial increase in the volume of mortgage loans extended with little or no down payment. d. High interest rates made it less attractive to lock in to a fixed-rate, long-term loan.
Enforcement of antitrust policy is the responsibility of
A. the Trust Division of Congress and the World Trade Organization. B. the Federal Trade Commission and the Antitrust Division of the Department of Justice. C. the Food and Drug Administration and Congress. D. the World Trade Organization and the FDA.