The base is 5 because when you divide 31.5 by 6.3 it's 5
Answer:
$2,851.80
Step-by-step explanation:
Lets use the compound interest formula to solve:

<em>P = initial balance</em>
<em>r = interest rate (decimal)</em>
<em>n = number of times compounded annually</em>
<em>t = time</em>
First, change 1.1% into a decimal:
1.1% ->
-> 0.011
Next, plug the values into the equation:


She will have $2,851.80 after 5 years.
Times 4 because, 5 times 4 is 20, 20 times 4 is 80 and so on.