pre calculus question?

given f(x) = x+1. Evaluate f (2 / x+3).

1. x-5 / x+3

2. x+5 / x+3

3. 5 / 3

4. x / x+3

1 Answer

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  • 8 years ago
    Favorite Answer

    so f(x)=x+1

    and it wants to find f(2/(x+3))

    so basicly where ever there is a x in the original function rewrite 2/(x+3)

    f(x)=x+1

    f(2/(x+3))= 2/(x+3) +1

    Now it wants the function over a common denominator

    =2/(x+3) +(x+3)/(x+3)

    =(2+x+3)/(x+3)

    =(x+5)/(x+3)

    so youre answer is 2

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