document.write( "Question 435037: what rate of interest compounded annually is required to trple an investment in 7 years?
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Algebra.Com's Answer #301184 by robertb(5830)\"\" \"About 
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\"3P+=+P%281%2Br%2F1%29%5E%287%2A1%29+=+P%281%2Br%29%5E7\"
\n" ); document.write( "<==> \"3+=+%281%2Br%29%5E7\"
\n" ); document.write( "<==> \"root%287%2C+3%29+-+1+=+r\"
\n" ); document.write( "==> 1.16993 - 1 = r, or r = 0.16993, or r = 16.993%
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