a.price equaled marginal cost.
b.government regulation eliminated the product-variety externality.
c.the government raised taxes to subsidize firms that price below average total cost.
d.there were fewer firms, making the industry closer to an oligopoly.
11) Figure 9-3. The domestic country is China.
With trade, China will
a.import 100 pencil sharpeners.
b.import 250 pencil sharpeners.
c.export 150 pencil sharpeners.
d.export 250 pencil sharpeners.
12) Variable tolls on roads
a.are politically unpopular because people do not like the idea of paying for a good that
they used to consume without paying for it directly.
b.rise when traffic volume increases to ensure the speed on the road is kept high.
c.are an effective way of correcting the common resource problem on roads.
d.All of the above are correct.
13) The Ogallala aquifer is a large underground pool of fresh water under several
western states in the United States.
Any farmer with land above the aquifer can at present pump water out of it. We might