Economic inefficiency of a monopoly is indicated by

In the classical model, high unemployment due to a change in aggregate demand

A) can persist for an indefinite period of time. B) will return to its normal level quickly as wages adjust. C) will persist if due to a supply shock but not if due to a demand shock. D) never exists because unemployment can never deviate from its normal level.

Consider a small economy in which consumers buy only two goods: apples and pears. In order to compute the consumer price index for this economy for two or more consecutive years, we assume that

a. the number of apples bought by the typical consumer is equal to the number of pears bought by the typical consumer in each year. b. neither the number of apples nor the number of pears bought by the typical consumer changes from year to year. c. the percentage change in the price of apples is equal to the percentage change in the price of pears from year to year. d. neither the price of apples nor the price of pears changes from year to year.