Your insurance agent is trying to sell you an annuity that costs $200,000 today. By buying this annuity, your agent promises that you will receive payments of $1,225 a month for the next 30 years. What is the rate of return on this investment? 6.67 percent 5.97 percent 6.45 percent 6.20 percent 5.75 percent When I type the information into my calculator, I keep getting different results, how do I do this correctly