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5.3.9 E Question Help Find the final amount in the following retirement account, in which the rate of return on the account and the regular contribution change over time. $417 per month invested at 4%, compounded monthly, for 7 years, then $762 per month invested at 6%. compounded monthly, for 7 years. What is the amount in the account after 14 years? (Do not round until the final answer Then round to the nearest dollar as needed )