If a firm has already paid or has agreed to pay for something, we call that cost:
A. a fixed cost.
B. a spent cost.
C. a sunk cost.
D. a lost cost.
Answer: C
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Refer to the scenario above. If the marginal cost of producing the last unit of the good is $40, Nash equilibrium will occur when both firms charge a price of ________
A) $20 B) $40 C) $60 D) $70
Land on both sides of the border of Brazil and Venezuela has long been occupied by the Yanomamo people. These "fierce people" are the last Stone Age tribe left in South America. Following discovery of gold, approximately 45,000 garimperios (gold miners) invaded the Yanomamo territory. The mining process pollutes the rivers and scares away game, so traditional Yanomamo sources of food, are almost
impossible to find now. The Yanomamo are starving. Economists call this problem a. the cost disease. b. an externality. c. specialization. d. rent seeking.
An example of a deficit item on the U.S. balance of payments is
A) the sale of a spark plug made by a U.S. firm in Michigan to a Nissan plant in Tennessee. B) the purchase of Japanese yen by a U.S. firm. C) a deposit in a bank in Chicago by the government of Saudi Arabia. D) the payment of a dividend by a British firm to a U.S. family.
Refer to the information provided in Figure 17.2 below to answer the question(s) that follow. 
Figure 17.2 Refer to Figure 17.2. Sam has two job offers when he graduates from college. Sam views the offers as identical, except for the salary terms. The first offer is at a fixed annual salary of $60,000. The second offer is at a fixed salary of $30,000 plus a possible bonus of $60,000. Sam believes that he has a 50-50 chance of earning the bonus. If Sam takes the offer that maximizes his expected utility and is risk-neutral, which job offer will he choose?
A. Sam will take the first offer. B. Sam will take the second offer. C. Sam is indifferent between the offers-both yield the same expected utility. D. Indeterminate from the given information.