#### Answer

$609.50$

#### Work Step by Step

We know the following equation:
$$A=P(1+ \frac{r}{n})^{nt}$$
Where:
P is the principal.
A is the amount of interest.
r is the rate, expressed as a decimal.
t is the time, in years.
n is the number of times the interest is compounded per year.
Thus, we obtain:
$$A=500(1+ \frac{.08}{4})^{4*2.5}\\ A= 609.50$$