Find the final amount (rounded to the nearest dollar) in this retirement account, in which the rate of return on the account and the regular contribution change over time. $200 per month invested at 5%, compounded monthly, for 10 years; then $700 per month invested at 9%, compounded monthly, for 10 years. O About $211,590 O About $203,572 About $166,516 O About $422,589