SOLUTION: Evaluate 37 ∑ (2K-10) K=7

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Question 744747: Evaluate
37
∑ (2K-10)
K=7
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
sum%28%282k-10%29%2C+k=7%2C+37%29
2%2Asum%28k%2C+k=7%2C+37%29-10%2Asum%281%2C+k=7%2C+37%29
The sums are a little tricky because we are not summing from 1 to a number...
%28%2837%29%2837%2B1%29%2B%287-1%29%287%2B1-1%29%29-%2810%2837-7%2B1%29%29
1364-310%29

or 1054