Answer:
The correct answer is <u>$10,629</u>
Step-by-step explanation:
Here is how I got it!
First, you will have to borrow the 20,000 from the word problem.
Next, multiply <u>20,000 with 0.81 with the power of 3</u>
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The 3 is the number of years, n is the nearest $ answer.
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First, do 

(Wow, that's a crazy number!)
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With 0.531441, multiply it with 20,000

10,628.82 is technically (in money) $10,628.82 (with .82 being eighty-two cents).
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Finally, it states to answer to the <u>nearest</u> $.
Just round up the .82 to 1 dollar which will just add one more dollar to 10,628
⇒ 
Add you $ symbol
With the result being: $10,629