document.write( "Question 1034117: If I want to invest 10,000 dollars, how long will it take to double my investment at an annual interest rate of 10 percent, compounded continuously? \n" ); document.write( "
Algebra.Com's Answer #648736 by robertb(5830)\"\" \"About 
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\"A+=+Pe%5E%28rt%29\"\r
\n" ); document.write( "\n" ); document.write( "Let A = 20,000.\r
\n" ); document.write( "\n" ); document.write( "==> \"20000+=+10000e%5E%280.10t%29\" ==> \"2+=+e%5E%280.10t%29\" ==> \"t+=+ln2%2F0.10+=+6.93\" years, to three significant figures.
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