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OpenStudy (anonymous):
Write the sum using summation notation, assuming the suggested pattern continues. -1 + 2 + 5 + 8 + ... + 44
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OpenStudy (anonymous):
Each of those numbers is a multiple of three minus one, so: \[ \sum_{i = 0}^{15}{3i -1} \]
OpenStudy (anonymous):
awesome thanks so much @adotm
OpenStudy (anonymous):
Sure. Glad to help.
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