document.write( "Question 341734: 1, 4, 7, 10, ... What is the 100th number in this sequence? \n" ); document.write( "
Algebra.Com's Answer #244663 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "1, 4, 7, 10, ... What is the 100th number in this sequence?\r\n" );
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document.write( "This sequence has a common difference \"d=3\" because\r\n" );
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document.write( "\"4-1=7-4=10-7=3\"\r\n" );
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document.write( "So it is an arithmetic sequence with first term = \"a%5B1%5D=1\"\r\n" );
document.write( "and \"d=3\"\r\n" );
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document.write( "The formula for the nth term is\r\n" );
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document.write( "\"a%5Bn%5D\"\"%22%22=%22%22\"\"a%5B1%5D%2B%28n-1%29d\"\r\n" );
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document.write( "Substitute \"n=100\", \"a%5B1%5D=1\", \"d=3\"\r\n" );
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document.write( "\"a%5B100%5D=%22%22\"\"1%2B%28100-1%29%283%29\"\r\n" );
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document.write( "\"a%5B100%5D=%22%22\"\"1%2B%2899%29%283%29\"\r\n" );
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document.write( "\"a%5B100%5D=%22%22\"\"1%2B297\"\r\n" );
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document.write( "\"a%5B100%5D=%22%22\"\"298\"\r\n" );
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document.write( "Edwin
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