Check my work Assume that you contribute $350 per month to a retirement plan for 20 years. Then you are able to increase the contribution to $700 per month for another 30 years. Given a 7.2 percent interest rate, what is the value of your retirement plan after the 50 years? (Do not round intermediate calculations and round your final answer to 2 decimal places.) Future value of multiple annuities KPrex 9 of 10 Next 0