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26 February, 17:50

Given the function f (x) = 4 (x+3) - 5, solve for the inverse function when x = 3.

-21

-16

-10

-1

+2
Answers (1)
  1. 26 February, 18:20
    0
    Hello,

    f (x) = 4 (x+3) - 5=4x+12-5=4x+7

    y=4x+7==>c = (y-7) / 4

    f^ (-1) (x) = (x-7) / 4

    f^ (-1) (3) = (3-7) / 4=-4/4=-1

    Answer D
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