1. Jamie just paid off a loan of $2,544, the principal and simple interest. If he took out the loan six months ago at 12% simple interest, what was the amount borrowed?
2. Shanti charged $800 on her charge card and did not make a payment for six months. If there is a monthly charge of 1.5%, how much does she owe?
3. EZ Photo Company needs five copying machines in 2 1/2 years at $5,000 for each machine. How much money should be deposited quarterly to pay for these machines, if the annual rate of interest is 8%?
4. You have below in a table the frequency distribution of the waiting time of customers at a sandwich shop. Using the information: calculate the Average (Mean) andStandard Deviation of the waiting time for customers at this shop

Wait Time	Customers
15	100
18	150
24	200
30	50

Answer rating: 100% (QA)

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