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30 September, 23:18

Find the 15th, 18th, and, 31st terms in the sequence A (n) = 2 + (n-1) (-2)

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  1. 30 September, 23:28
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    15th term

    Step-by-step explanation:

    A (n) = 2 + (n-1) (-2)

    A (15) = 2 + (15-1) (-2)

    A (15) = 2 + (14) (-2)

    A (15) = 2 + (-28)

    A (15) = 2-28

    A (15) = -26

    18th term

    A (n) = 2 + (n-1) (-2)

    A (18) = 2 + (18-1) (-2)

    A (18) = 2 + (17) (-2)

    A (18) = 2 + (-34)

    A (18) = 2-34

    A (18) = -32

    31st term

    A (n) = 2 + (n-1) (-2)

    A (31) = 2 + (31-1) (-2)

    A (31) = 2 + (30) (-2)

    A (31) = 2 + (-60)

    A (31) = 2-60

    A (31) = -58
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