Which one of the following is not a reason why businesses accept paper currency knowing that, unlike a gold coin, the paper the currency is printed on is worth very little? Paper currency is a good medium of exchange because it is A. durable. B. universally acceptable. C. not valuable. D. of standard quality. E. divisible.

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)?