All of the following will cause the aggregate supply curve to shift to the right EXCEPT
A) discoveries of raw materials.
B) a reduction in input prices.
C) an increase in marginal tax rates.
D) a reduction in international trade barriers.
C
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Suppose a competitive firm is paying a wage of $12 an hour and sells its product at $3 per unit. Assume that labor is the only input. If hiring another worker would increase output by three units per hour, then to maximize profits the firm should
A) not hire an additional worker. B) not change the number of workers it currently hires. C) hire another worker. D) There is not enough information to answer the question.
The U.S. dollar exchange rate describes the
a. the deficit/surplus situation in the balance of payments. b. the price of a foreign currency in terms of dollars. c. the deficit/surplus situation in the merchandise trade balance. d. future changes in foreign balance of payments. e. none of the above.
Relative to an environment with free trade and no tariff, the winners from the tariff are the domestic ________, and the losers from the tariff are the domestic______. 
A. consumers of sugar and the government; producers of sugar B. producers of sugar; consumers of sugar and the government C. consumers of sugar; producers of sugar D. producers of sugar and the government; consumers of sugar
A public good
A) is a good that is usually consumed in public, such as a restaurant meal. B) is a good people can consume even if they do not pay for it. C) is a good produced by government. D) results in an efficient allocation of resources. E) is a good for which people are willing to pay a very high price.