According to the information on compound interest at the following URL: http://www.moneychimp.com/articles/f...s/fmfutval.htm

"To find a formula for future value, We'll write P for your starting principal, and r for the rate of return expressed as a decimal. (So if the interest rate is 5%, r equals .05).

The balance will grow according to the following schedule:"

Year------------Balance

Now ------------P

1 ---------------P + rP

2---------------(P + rP) + r(P + rP)

3

4

How would years 3 and 4 appear in the above?

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