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OpenStudy (anonymous):
Please help!! I will become a fan! What is the sum of a 38–term arithmetic sequence where the first term is 14 and the last term is 154? 2,660 2,850 2,926 3,192
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OpenStudy (anonymous):
Tip: the sum of 1 + 2 + 3 + ... 8 + 9 + 10 and 10 + 9 + 8 + ... + 3 + 2 + 1 is (11 * 10) / 2
OpenStudy (anonymous):
That didn't help
OpenStudy (anonymous):
It would be D
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