Billy bob runs a seafood restaurant. last year he earned $50,000 in revenue. he had explicit costs of $20,000. billy bob could have made $30,000 working for the county and could have received an additional $20,000 if he rented out his building and equipment. calculate billy bob’s economic profit. group of answer choices -$20,000 $20,000 $0 $30,000

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)?