document.write( "Question 849386: Evaluate each series using sum formulas.\r
\n" ); document.write( "\n" ); document.write( "4 + 12 + 20 + 28 + …; n = 9 ie the sum of the 1st nine terms\r
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Algebra.Com's Answer #511511 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( "{4 + 12 + 20 + 28 +...}  Arithmetic Series  d = 8
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document.write( "= 324 \n" );
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