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 $440.00 and receive $855.18 in 12 years. b. Invest $3,200.00 and receive $12,119.98 in 16 years c. Invest $31,306.85 and receive $140,000.00 in 20 years. d. Invest $31,382.62 and receive $1,000,000.00 in 50 years. P 4/2 a. What annual rate of return will Keiko earn if she invests $440.00 today and receives $855.18 in 12 years? L08 .09 % (Round to two decimal places.)