document.write( "Question 954603: 7^(n+3)=80 \n" ); document.write( "
Algebra.Com's Answer #583045 by Edwin McCravy(20065)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "\"7%5E%28n%2B3%29=80\"\r\n" );
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document.write( "Take logs of both sides\r\n" );
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document.write( "\"log%28%287%5E%28n%2B3%29%29%29=log%28%2880%29%29\"\r\n" );
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document.write( "\"%28n%2B3%29log%28%287%29%29=log%28%2880%29%29\"\r\n" );
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document.write( "Divide both sides by log(7):\r\n" );
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document.write( "\"n%2B3=log%28%2880%29%29%2Flog%28%287%29%29\"\r\n" );
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document.write( "Subtract 3 from both sides:\r\n" );
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document.write( "\"n=log%28%2880%29%29%2Flog%28%287%29%29-3\"\r\n" );
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document.write( "Get a calculator:\r\n" );
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document.write( "\"n=-0.7480837762\"\r\n" );
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document.write( "Note: you can use \"ln\" (natural logarithm) instead of \r\n" );
document.write( "\"log\" (common logarithm) and get the same answer.\r\n" );
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document.write( "Edwin
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