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28 October, 00:52

Given the function f (x) = 3x2 - 4, what is f (-2) ?

A. - 40

B. - 16

C. 8

D. 32

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Answers (1)
  1. 28 October, 03:32
    0
    All this is asking you to do is plug in - 2 for x

    So

    f (x) = 3x²-4

    f (-2) = 3 (-2²) - 4

    f (-2) = 12-4

    f (-2) = 8
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