[tex]\bf \qquad \textit{Compound Interest Earned Amount}
\\\\
A=P\left(1+\frac{r}{n}\right)^{nt}
\quad
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{original amount deposited}\to &\$500\\
r=rate\to 4\%\to \frac{4}{100}\to &0.04\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{APR, so it's annual, once}
\end{array}\to &1\\
t=years\to &3
\end{cases}
\\\\\\
A=500\left( 1+\frac{0.04}{1} \right)^{1\cdot 3}[/tex]
