Answer:
$360
Explanation:
You are going to want to use the simple interest formula for this. The one below is modified for solving the interest earned.
![I = Prt](https://img.qammunity.org/2021/formulas/business/college/sgxs42bfv52vlp42o1sa7njh463xltnsih.png)
P = initial balance
r = annual interest rate
t = time
First, lets change 3% into a decimal:
3% ->
-> 0.03
Now, plug in the values:
![I=800(0.03)(15)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/wnelwy5flpv2mrb3lsrqizjyjxjvbmd6jh.png)
![I=360](https://img.qammunity.org/2021/formulas/mathematics/middle-school/o6jilsxlcwmpuynae5pjxgkzjqce2ugq5s.png)
The interest earned will be $360.