document.write( "Question 1203682: The hourly wage of some Toyota assembly line workers increased annually by the same percentage if their wage went from 7.10 to 20.08 in 12 years what is the doubling time \n" ); document.write( "
Algebra.Com's Answer #839438 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "It more than doubled in 12 years, so it won't take that\r\n" );
document.write( "long to double.\r\n" );
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document.write( "\"A=P%281%2Br%2Fn%29%5Ent\"\r\n" );
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document.write( "\"20.08=7.10%281%2Br%2F1%29%5E%281%2A12%29\"\r\n" );
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document.write( "\"20.08=7.10%281%2Br%29%5E%2812%29\"\r\n" );
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document.write( "\"ln%2820.08%29=ln%287.10%29%2Bln%281%2Br%29%5E%2812%29\"\r\n" );
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document.write( "\"ln%2820.08%29=ln%287.10%29%2B%2812%29ln%281%2Br%29\"\r\n" );
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document.write( "\"ln%2820.08%29-ln%287.10%29=%2812%29ln%281%2Br%29\"\r\n" );
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document.write( "\"1.039629511=%2812%29ln%281%2Br%29\"\r\n" );
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document.write( "\"%281.039629511%29%2F12=ln%281%2Br%29\"\r\n" );
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document.write( "\"+0.0866357926=ln%281%2Br%29\"\r\n" );
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document.write( "\"e%5E0.0866357926=e%5E%28ln%281%2Br%29%29\"\r\n" );
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document.write( "\"1.090499439+=+1%2Br\"\r\n" );
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document.write( "\"0.090499439=r\"\r\n" );
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document.write( "Now to double from P to 2P\r\n" );
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document.write( "\"A=P%281%2Br%2Fn%29%5E%28nt%29\"\r\n" );
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document.write( "\"2P=P%281%2B0.090499439%2F1%29%5E%281t%29\" \r\n" );
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document.write( "\"2cross%28P%29=cross%28P%29%281.090499439%29%5Et\"\r\n" );
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document.write( "\"2=%281.090499439%29%5Et\"  \r\n" );
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document.write( "\"ln%282%29=ln%281.090499439%29%5Et\"\r\n" );
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document.write( "\"ln%282%29=t%2Aln%281.090499439%29\"\r\n" );
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document.write( "\"ln%282%29%2Fln%281.090499439%29=t\"\r\n" );
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document.write( "\"8.000702283=t\"\r\n" );
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document.write( "Answer: 8 years.\r\n" );
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document.write( "Edwin
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