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16 February, 22:14

Let f (x) = - 2x - 7 and g (x) = - 4x + 3. Find (f o g) (-5)

A. - 9

B. 3

C. - 53

D. 23

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Answers (1)
  1. 16 February, 22:53
    0
    (f o g) (-5) = f (g (-5))

    first find g (-5) to make it easier

    g (-5) =

    -4 (-5) + 3=

    20+3=

    23

    f (g (-5)) = f (23)

    f (23) =

    -2 (23) - 7=

    -46-7=

    -53

    (f o g) (-5) = - 53

    C is answer
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