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22 December, 05:19

Let f (x) = - 2x - 7 and g (x) = - 4x + 6. Find (f o g) (-5)

A. - 6

B. 3

C. 26

D. - 59

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Answers (2)
  1. 22 December, 05:32
    0
    The answer is - 6. so the (f o g) is - 6
  2. 22 December, 05:39
    0
    (f o g) (x) means f (g (x))

    one way to find (f o g) (-5) is to find the value of g (-5) then subsitute that for x in f (x)

    so

    g (5) = - 4 (-5) + 6

    g (5) = 20+6

    g (5) = 26

    f (g (5)) = f (26) = - 2 (26) - 7

    f (g (5)) = - 52-7

    f (g (5)) = - 59

    answer is D
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