document.write( "Question 1172939: What interest rate is needed for $12000 to double after 10 years if compounded
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Algebra.Com's Answer #798086 by VFBundy(438)\"\" \"About 
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\"Total\" = \"Pe%5Ert\"
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\n" ); document.write( "\"24000\" = \"12000e%5Er%2810%29\"
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\n" ); document.write( "\"24000\" = \"12000e%5E%2810r%29\"
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\n" ); document.write( "\"2\" = \"e%5E%2810r%29\"
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\n" ); document.write( "\"2\" = \"2.718%5E%2810r%29\"
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\n" ); document.write( "\"log%282.718%2C2%29+=+10r\"
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\n" ); document.write( "\"0.6932+=+10r\"
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\n" ); document.write( "\"r+=+0.0693\"
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\n" ); document.write( "The interest rate needed to double the $12,000 after 10 years is 6.93%.
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