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sequences and series Find the sum of each series. If necessary, round to the nearest tenth. (4 marks - 2 marks each) a. 1-3+9-...-243 b.

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sequences and series

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Find the sum of each series. If necessary, round to the nearest tenth. (4 marks - 2 marks each) a. 1-3+9-...-243 b. -72+36-18+... (first 8 terms)

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