Nikon sends researchers to the homes of camera owners who have had babies within the last year to observe how new Moms are using the features of their cameras. After the observation session, the researcher interviews the Moms about what was observed to clarify the motivation. This is an example of .

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)?