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12 May, 23:00

Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule.

A (n) = 12 + (n-1) (3)

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  1. 12 May, 23:21
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    1. a (1) = 12 + (1-1) (3)

    a (1) = 12+0 (3)

    a (1) = 36

    a (4) = 12 + (4-1) (3)

    a (4) = 12+3 (3)

    a (4) = 45

    a (10) = 12 + (10-1) (3)

    a (10) = 21 (3)

    a (10) = 63
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