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21 August, 12:27

Given the function

f (x) = 0.5|x-4|-3, for what values of x is f (x) = 7?

A. x=-24, x=16

B. x=-16, x=24

C. x=-1, x=9

D. x=1, x=-9

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Answers (1)
  1. 21 August, 12:42
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    7 = 0.5|x-4| - 3 add 3 to both sides: -

    0.5|x-4| = 10 divide bs by 0,5:-

    |x-4| = 20

    either x - 4 = 20 or x - 4 = - 20

    this gives x = 24, x = - 16
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