C. D. Rom has just given an insurance company $32,500. In return, he will receive an annuity of $3,800 for 20 years. 6 At what rate of return must the insurance company invest this $32,500 in order to make the annual payments? Use Appendix D for an approximate answer, but calculate your final answer using the financial calculator method. (Do not round intermediate calculations. Round your final answer to 2 decimal places.) 10 points Rate of return