There has been a downward trend in the United States since 1980 in the ambient concentrations of
a. sulfur dioxide.
b. carbon monoxide.
c. lead.
d. all of the above.
d
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If total revenue falls when output increases, marginal revenue is
A) positive. B) negative. C) zero. D) greater than total revenue. E) elastic.
John is trying to decide whether to expand his business or not. If he continues his business as it is, with no expansion, there is a 50 percent chance he will earn $100,000 and a 50 percent chance he will earn $300,000. If he does expand, there is a 30 percent chance he will earn $100,000, a 30 percent chance he will earn $300,000 and a 40 percent chance he will earn $500,000. It will cost him $150,000 to expand. John should:
A. expand, since he expects to earn $320,000 by expanding, and it will only cost him $150,000 to do so. B. not expand, because there is a chance John will earn the same as if he didn't expand and would be out the $150,000 investment. C. not expand, since he expects to earn $120,000 more by expanding than not, and it will cost him $150,000 to do so. D. expand, since he has a 70 percent chance of earning more than the cost of expansion.
Consider the same setup with the curved final exam as in the previous question. Now suppose the students move sequentially. Which best describes the outcome in the subgame-perfect equilibrium?
a. Brainiacs study and Numbskulls party regardless of who moves first. b. Brainiacs party and Numbskulls study regardless of who moves first. c. The party moving first studies. d. The party moving first parties.
Harry owns a hot dog stand near campus. When a pizza stand opens next to Harry's hot dog stand, he finds that he has to lower the price of his hot dogs in order to attract the same number of customers. Explain why this is the case