Question

Interest.

Answer 1

Answer:

Interest: $390 | Total: $715

Step-by-step explanation:

To answer the first question, we can use the simple interest formula provided:

$I=Prt$

P = initial balance

r = annual interest rate

t = time

First, change 8% into the decimal form:

8% -> $\frac{8}{100}$ -> 0.08

Now, plug in the values:

$I=325(0.08)(15)$

$I=390$

Charlie made $390 of interest. To find the total, just add that number to $325.

$390+325=715$

Charlie's total money made was $715.