document.write( "Question 1200760: A G.P has 8 terms it first and last term are 0.3 and 38.4 calculate
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Algebra.Com's Answer #834992 by Edwin McCravy(20056)\"\" \"About 
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document.write( "0.3, 0.3r, 0.3r2, 0.3r3, 0.3r4, 0.3r5, 0.3r6, 0.3r7 = 38.4\r\n" );
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document.write( "0.3r7 = 38.4\r\n" );
document.write( " Divide both sides by 0.3\r\n" );
document.write( "r7 = 128\r\n" );
document.write( "\"r=root%287%2C128%29=2\"\r\n" );
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document.write( "\"S%5Bn%5D=%28r%2Aa%5Bn%5D-a%5B1%5D%29%2F%28r%5E%22%22-1%29\"\r\n" );
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document.write( "\"S%5B8%5D=%282%2A38.4-0.3%29%2F%282-1%29\"\r\n" );
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document.write( "\"S%5B8%5D=%2876.8-0.3%29%2F%281%29\"\r\n" );
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document.write( "\"S%5B8%5D=76.8-0.3\"\r\n" );
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document.write( "\"S%5B8%5D=76.5\"\r\n" );
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document.write( "Edwin
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