When externalities exist, buyers and sellers
a. neglect the external effects of their actions, but the market equilibrium is still efficient.
b. do not neglect the external effects of their actions, and the market equilibrium is efficient.
c. neglect the external effects of their actions, and the market equilibrium is not efficient.
d. do not neglect the external effects of their actions, and the market equilibrium is not efficient.

Identify the accounting assumption or principle that is described below. (a) select the accounting assumption or principle is the rationale for why plant assets are not reported at liquidation value. (note: do not use the historical cost principle.) (b) select the accounting assumption or principle indicates that personal and business record-keeping should be separately maintained. (c) select the accounting assumption or principle assumes that the dollar is the "measuring stick" used to report on financial performance. (d) select the accounting assumption or principle separates financial information into time periods for reporting purposes. (e) select the accounting assumption or principle measurement basis used when a reliable estimate of fair value is not available. (f) select the accounting assumption or principle dictates that companies should disclose all circumstances and events that make a difference to financial statement users.

Eileen's elegant earrings produces pairs of earrings for its mail order catalogue business. each pair is shipped in a separate box. she rents a small room for $150 a week in the downtown business district that serves as her factory. she can hire workers for $275 a week. there are no implicit costs. what is the marginal product of the second worker?

John is a 45-year-old manager who enjoys playing basketball in his spare time with his teenage sons and their friends. at work he finds that he is better able to solve problems that come up because of his many years of experience, but while on the court, he finds he is not as good keeping track of the ball while worrying about the other players. john's experience is: