Answer:
Interest: $390 | Total: $715
Step-by-step explanation:
To answer the first question, we can use the simple interest formula provided:
<em>P = initial balance</em>
<em>r = annual interest rate</em>
<em>t = time</em>
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First, change 8% into the decimal form:
8% -> -> 0.08
Now, plug in the values:
Charlie made $390 of interest. To find the total, just add that number to $325.
Charlie's total money made was $715.