so the jet ski costs 2925, she'll get a loan for 48 months, well, keeping in mind that there are 12 months in a year, 48 months is really 48/12 years, namely 4 years.
[tex] \bf ~~~~~~ \textit{Simple Interest Earned}
\\\\
I = Prt\qquad
\begin{cases}
I=\textit{interest earned}\\
P=\textit{original amount deposited}\to& \$2925\\
r=rate\to 6.5\%\to \frac{6.5}{100}\to &0.065\\
t=years\to &4
\end{cases}
\\\\\\
I=(2925)(0.065)(4)\implies I=760.5 [/tex]