b.the value of ivory has decreased.
c.some elephants have been made a private good, and people are allowed to kill
elephants on their own property.
d.regulations are being enforced more forcefully.
9) Assume, for Vietnam, that the domestic price of textiles without international trade is
lower than the world price of textiles. This suggests that, in the production of textiles,
a.Vietnam has a comparative advantage over other countries and Vietnam will import
textiles.
b.Vietnam has a comparative advantage over other countries and Vietnam will export
textiles.
c.other countries have a comparative advantage over Vietnam and Vietnam will import
textiles.
d.other countries have a comparative advantage over Vietnam and Vietnam will export
textiles.
10) A construction company has built 30 houses so far this year at a total cost to the
company of $7.5 million. If the company builds a 31sthouse, its total cost will increase
to $7.76 million. Which of the following statements is correct?
a.For the first 30 houses, the average cost per house was $250,000.
b.The marginal cost of the 31sthouse, if it is built, will be $260,000.
c.If the company can experience a marginal benefit of $275,000 by building the
31sthouse, then the company should build it.
d.All of the above are correct.
11) In the short-run, a firm‘s supply curve is equal to the
a.marginal cost curve above its average variable cost curve.
b.marginal cost curve above its average total cost curve.
c.average variable cost curve above its marginal cost curve.
d.average total cost curve above its marginal cost curve.
12) If James earns $80,000 in taxable income and pays $20,000 in taxes, his average tax