SOLUTION: write the series -5+5+15+25+35 using summation notation

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Question 879621: write the series -5+5+15+25+35 using summation notation
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
First term is -5 and the common difference being added is 5. General term of the sequence (not the series) is -5%2B%28n-1%29%2A5. The series starting index is 1 and the final index is 5.

The summation is sum%28%28-5%2B%28n-1%29%2A5%29%2Cn=1%2C5%29.