Natalie invests $8,387 in a retirement account with a fixed annual interest rate of 6% compounded semiannually. What will the account balance be after 16 years?
$21,597.22
Ashley invests $5,771 in a retirement account with a fixed annual interest rate of 9% compounded monthly. How long will it take for the account balance to reach $24,227.11?
16 years
Chelsea invests $6,316 in a savings account with a fixed annual interest rate compounded quarterly. After 4 years, the balance reaches $6,840.22. What is the interest rate of the account?
2%
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