SOLUTION: find the indicated sum for each arithmetic series S15 for 5 + 9 + 13 + 17

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Question 972482: find the indicated sum for each arithmetic series
S15 for 5 + 9 + 13 + 17

Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
General term 5%2B%28n-1%29%2A4, and you could refer to the summation formula.

%2815%2F2%29%285%2B%285%2B%2815-1%29%2A4%29%29, the use of the formula with all the number values filled in. Simplify or compute.