SOLUTION: PLZZ HELP!!! An investment at the end of 18 years was $85,678. The interest rate was 9.0% annual interest compounded quarterly. What was the original amount of the investment?

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Question 584765: PLZZ HELP!!!
An investment at the end of 18 years was $85,678. The interest rate was 9.0% annual interest compounded quarterly. What was the original amount of the investment?
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
85678 = x * {[1 + (.09/4)]^(18 * 4)}