Question 1042519
In order to help you with your problem I need to know: 
"Elle's parents invested $5,000 in two different accounts"
Did they invest 5K in each account or a total of 5K in the 2 accounts?
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For now I'll assume that it's 5K in each account
:
Monthly:
5,000(1+0.055/12)^(12*18) = 13,425.77
:
Continuous:
5,000*e^(0.055*18) = 13,456.17
Note: If your calculator doesn't have e, use 2.71828 for e.
:
John