Imperfect markets: a. always result in supply exceeding demand. b. occur when the buyer or seller has an influence on the price. c. do not exist in democracies. d. can't occur if there are many buyers and many sellers. e. always result in demand exceeding supply.

Qwest airlines has implemented a program to recycle all plastic drink cups used on their aircraft. their goal is to generate $7 million by the end of the recycle program's five-year life. each recycled cup can be sold for $0.005 (1/2 cent). a. how many cups must be recycled annually to meet this goal? assume uniform annual plastic cup usage and a 0% interest rate. b. repeat part (a) when the annual interest rate is 12%. c. why is the answer to part (b) less than the answer to part (a)?