SOLUTION: Henry invested $12,000 in a new restaurant. When the restaurant was sold two years later, he received $27,000. Find his average annual return by solving the equation 12,000(1 + r)^

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Question 143977: Henry invested $12,000 in a new restaurant. When the restaurant was sold two years later, he received $27,000. Find his average annual return by solving the equation 12,000(1 + r)^2 = 27,000.
This problem is in a chapter on equations by factoring, and also has examples for the Pythagorean theorem.
Thanks for any help you can give me!

Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
Given 12%2C000%281+%2B+r%29%5E2+=+27%2C000 find r
%281+%2B+r%29%5E2+=+27%2C000%2F12000
%281+%2B+r%29%5E2+=+2.25
%281+%2B+r%29+=+sqrt%282.25%29
%281+%2B+r%29+=+1.5
+r+=+0.5
Henry made 50% per year compounded annually.