document.write( "Question 1089515: How long would it take $7000 to grow to $28,000 at 9% compounded continuously? Round your answer to thenearest tenth of a year.
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Algebra.Com's Answer #703855 by math_helper(2461) $\"\"$ $\"About$

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$\"+F+=+Pe%5E%28rt%29+\"$
\n" ); document.write( "F = Future value
\n" ); document.write( "P = Present value
\n" ); document.write( "r = annual rate expressed as a decimal
\n" ); document.write( "t = time in years\r
\n" ); document.write( "\n" ); document.write( " $\"+28000+=+7000%2Ae%5E%280.09t%29+\"$
\n" ); document.write( " $\"++4+=+e%5E%280.09t%29+\"$
\n" ); document.write( " $\"+ln%284%29+=+0.09t+\"$
\n" ); document.write( " $\"+t+=+ln%284%29%2F0.09+=+highlight%2815.40327%29+\"$ years (about 15 years and 147 days)\r
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\n" ); document.write( "Check: $\"+7000%2Ae%5E%280.09%2A15.40327%29+=+7000%283.9999997%29+=+28000+\"$ rounded to the nearest penny. \n" ); document.write( "

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