document.write( "Question 389888: Find the number of terms of the sequence 1,4,7,10... Must be taken if the sum is to exceed 100. \n" ); document.write( "

Algebra.Com's Answer #276412 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,        
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document.write( "Find the number of terms of the sequence 1,4,7,10... for 
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document.write( " In this example d = 3 and first term is = 1
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document.write( "    n/2 [2 + 3(n-1)] > 100
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document.write( "     n[2 + 3n-3)] > 200
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document.write( "     2n + 3n^2-3n > 200
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document.write( "    3n^2 - n - 200 = 0  n=-8 or n= 8  1/3
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document.write( "  Nine terms must be taken for sum to be > 100 \n" );
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