answer for b,c,d

please answer each part in the question!

Interest rate (with changing years). Keiko is looking at the following investment choices and wants to know what annual rate of refurn each choice produces. a. Invest $450.00 and receive $809.38 in 11 years. b. Invest $3,600,00 and recelve $12,833,89 in 15 years. c. invest $30,702.32 and receive $150,000.00 in 20 years. d. Invest $32,819.77 and receive $1,400,000.00 in 40 years. a. What annual rate of return will Keiko eam if she invests $450.00 today and receives $809.38 in 11 years? % (Round to two decimal places.) b. What annual rate of retum will Keiko eam if she invests $3,600.00 today and recelves $12,833,89 in 15 years? \% (Round to two decimal places.)