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12 September, 23:12

Find the 9th term for the sequence a (n) = 7-9n.

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  1. 13 September, 01:40
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    Just plug in 9 for n

    a (n) = 7 - 9n

    a (9) = 7 - 9 (9)

    a (9) = 7 - 81

    a (9) = - 74

    so the 9th term is - 74
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