1. what is the sum of the first 26 terms of the arithmetic series?

7+11+15+19+…

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2. what is ∑n=125(3n−2) equal to?

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3. what is the sum of the first 200 natural numbers?

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4. mercedes rides her bike 10 miles in the first week. she increases the distance she rides by 2 miles each week.

how many miles will she ride over the course of 8 weeks?

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miles

5. the number of people that enter a contest the first day is 27. 31 people enter the second day and 35 enter on the third day. this pattern continues and the contest lasts 14 days.

what is the total number of people that enter the contest?

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