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14 February, 19:50

The range of the function f (x) = x + 5 is {7, 9}. What is the function's domain?

A.{2, 4}

B.{-2, - 4}

C.{12, 14}

D.{-12, - 14}

E.{0, 5}

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Answers (1)
  1. 14 February, 20:13
    0
    Range = y values

    domain = x values

    Plug 7 for y

    7 = x + 5

    Solve for x

    2 = x

    Plug 9 for y

    9 = x + 5

    Solve for x

    4 = x

    Domain {2, 4}
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