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Evaluate:
Σ18/1 (5n– 4) = [? ]

Evaluate: Σ18/1 (5n– 4) = [? ]-example-1
User Heyjinkim
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1 Answer

14 votes
14 votes

Basically, you are going to evaluate 5n - 4 from n = 1 to n = 18. Don't forget to add as you evaluate.

I will get you started.

Let n = 1 and then n = 2.

5(1) - 4 + 5(2) - 4 + the rest

5 - 4 + 10 - 4 + the rest

1 + 6 + the rest

7 + the rest

Just continue the pattern. You will then let n be 3, 4, 5, etc all the way to 18.

User Tausif Anwar
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