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24 October, 05:43

If F (x) = 4x - 1 and G (x) = x^2 + 7, what is G (F (x)) ?

A. 16x^2 - 8x + 8

B. 16x^2 + 8

C. 4x^3 - 7

D. 4x^3 + 28x - 7

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Answers (2)
  1. 24 October, 06:12
    0
    C is the answer because 4 squared is 16 and negative 1 plus 7 is 8
  2. 24 October, 06:13
    0
    Substitute in f (x) every time you see an x value in g (x)

    Hence, g (f (x)) = (4x - 1) ^2 + 7

    = 16x^2 - 8x + 1 + 7

    = 16x^2 - 8x + 8 (ie A)
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