document.write( "Question 303394: Determine whether each series is arithmetic or geometric. Then find the sum to the given term.
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Algebra.Com's Answer #217464 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
\"35%2B70%2B140%2B280%2B%22...%22%2BS%5B7%5D\"
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document.write( "It's geometric with r=2 because each term is 2 times the\r\n" );
document.write( "preceding term:\r\n" );
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document.write( "\"S%5Bn%5D=a%5B1%5Dr%5E%28n-1%29\"\r\n" );
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document.write( "\"n=7\", \"a%5B1%5D=35\",  \"r=2\"\r\n" );
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document.write( "\"S%5B7%5D=35%282%29%5E%287-1%29\"\r\n" );
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document.write( "\"S%5B7%5D=35%282%29%5E6\"\r\n" );
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document.write( "\"S%5B7%5D=35%2864%29\"\r\n" );
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document.write( "\"S%5B7%5D=2240\"\r\n" );
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document.write( "Edwin
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