document.write( "Question 888275: Find the sum of all 15 terms in a sequence 7, 3, -1, -5 ...tn, \n" ); document.write( "
Algebra.Com's Answer #537234 by luke94(89)\"\" \"About 
You can put this solution on YOUR website!
firstly note your sequence is arithmetic as it is decreasing by -4.
\n" ); document.write( "write out your sequence: 7,3,-1,-5,-9,-13,-17,-21,-25,-29,-33,-37,-41,-45,-49
\n" ); document.write( "add them all up and your answer should be = -315
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