document.write( "Question 377714: How long will it take for an investment of $1000 to double in value if the interest rate is 7.5% per year, compounded continuously? \n" ); document.write( "
Algebra.Com's Answer #268405 by robertb(5830)\"\" \"About 
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\"2000+=+1000e%5E%280.075%2At%29\",
\n" ); document.write( "\"2+=+e%5E%280.075%2At%29\",
\n" ); document.write( "\"ln2+=+0.075t\",
\n" ); document.write( "t = ln2/0.075
\n" ); document.write( "t = 9.24 years.
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