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What is the sum of the first 28 terms of this arithmetic sequence? 69, 75, 81, 87, 93, 99, …

What is the sum of the first 28 terms of this arithmetic sequence? 69, 75, 81, 87, 93, 99, …
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What is the sum of the first 28 terms of this arithmetic sequence?

69, 75, 81, 87, 93, 99, …

User Joshua MN
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1 Answer

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It increases by 6 each term, so building off of the first 6 terms you provided....
69, 75, 81, 87, 93, 99, 105, 111, 117, 123, 129, 135, 141, 147, 153, 159, 165, 171, 177, 183, 189, 195, 201, 207, 213, 219, 225, 231

Hope this helps!
User Lachlan Young
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