If you deposit $100 into an account that pays a fixed rate compounded annually, what is the
fixed rate if there's $432.19 in the account after 30 years?

Name: If you deposit $100 into an account that pays a fixed rate compounded annually, what is the fixed rate if there's $432.19 in the account after 30 years?
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The Answer is

\begin{array} { l l l } F = P ( 1 + i ) ^ { n } & \$ 432.19 = \$ 100 ( 1 + i ) ^ { 30 } & \4.3219 = ( 1 + i ) ^ { 30 } & ( 4.3219 ) ^ { 1 / 30 } - 1 = { } _ { i } & i = 5 \%\end{array}

If You Deposit $100 into an Account That Pays a Fixed