algebra

let f(x)=x^2+5 and g(x)=x+5/x. find (g f)(-3)

1/4
14/19
19/14
49/9

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asked by Helen
  1. I will interpret (g f)(-3) as
    f(g(-3))

    now g(-3) = -3 + 5/-3 = -14/3
    then

    f(g(-3))
    = f(-14/3)
    = 196/9 + 5
    = 241/9 , none of your choices match

    If you meant g(x) = (x+5)/x
    repeating the above, I get
    49/9

    but that is not what you typed, but probably meant.

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    posted by Reiny

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