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 $400.00 and receive $797.88 in 12 years b. Invest $2,800.00 and receive $11,729,64 in 15 years c. Invest $30,357.22 and receive $130,000.00 in 20 years d. Invest $34,007,08 and receive $1,300,000,00 in 35 years