Answer:
15 years and 8 months
Step-by-step explanation:
I used the formula for compound interest as shown below and solved for the unknown, time.
Since our interest is compounded annually (So once a year) our m value is 1.
I think it is 9 - x because 81-x^2/9-x = 9-x
It’s h and i have to use 20 characters in order to send:)
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