document.write( "Question 758268: how long will it take 10,000 to grow to 12,000 if it invested at 9% compounded monthly? \n" ); document.write( "
Algebra.Com's Answer #461364 by nerdybill(7384)\"\" \"About 
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how long will it take 10,000 to grow to 12,000 if it invested at 9% compounded monthly?
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\n" ); document.write( "Compound interest formula:
\n" ); document.write( "A = P(1 + r/n)^(nt)
\n" ); document.write( "12000 = 10000(1 + .09/12)^(12t)
\n" ); document.write( "12000 = 10000(1 + 0.0075)^(12t)
\n" ); document.write( "12000 = 10000(1.0075)^(12t)
\n" ); document.write( "1.2 = (1.0075)^(12t)
\n" ); document.write( "\"log%281.0075%2C1.2%29\" = 12t
\n" ); document.write( "log(1.2)/log(1.0075) = 12t
\n" ); document.write( "[log(1.2)/log(1.0075)]/12 = t
\n" ); document.write( "2.03 years = t
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