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2 November, 21:57

F (n + 1) = f (n) - 3. If f (4) = 22, what is f (1) ?

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  1. 2 November, 22:10
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    f (1) = 31.

    Step-by-step explanation:

    f (n + 1) = f (n) - 3

    So f (4) = f (3) - 3

    22 = f (3) - 3

    f (3) = 22 + 3 = 25

    so f (2) = 25 + 3 = 28

    and f (1) = 28 + 3 = 31.
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