document.write( "Question 709273: Find the sum of the first eight terms of the arithmetic series 3 + 5 + 7 + 9 +... \n" ); document.write( "
Algebra.Com's Answer #436512 by josgarithmetic(39620)\"\" \"About 
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The sequence of terms uses difference of 2. The beginning term is 3.\r
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\n" ); document.write( "\n" ); document.write( "The general term of the sequence, \"a%5Bn%5D=3%2B%28n-1%29%2A2\"\r
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\n" ); document.write( "\n" ); document.write( "The summation for n terms of an arithmetic sequence is
\n" ); document.write( "\"S=%28n%2F2%29%28a%5B1%5D%2Ba%5Bn%5D%29\", using as indicated, the first and last terms in the range.\r
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\n" ); document.write( "\n" ); document.write( "\"%288%2F2%29%283%2B17%29=80\"
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