document.write( "Question 874426: what annual rate of interest is required to double an investment in 5years? \n" ); document.write( "
Algebra.Com's Answer #527476 by ewatrrr(24785)\"\" \"About 
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2 = (1+r)^5
\n" ); document.write( "\"root%285%2C2%29+-+1\" = r = .1487(nearest 10-thousandth) = 14.87%
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