Interest rate (with changing years). Keiko is looking at the following investment choices and wants to know what annual rate of return each choice produces a. Invest $360.00 and receive 5809 31 in 9 years b. Invest $3,200.00 and receive $12,65126 in 15 years c. Invest $32,495 39 and receive $140,000.00 in 22 years d. Invest $33.154.36 and receive $1,200,000.00 in 45 years. a. What annual rate of return will Keiko earn if she invests 5360.00 today and receives $809 31 in 9 years % (Round to two decimal places)