Question $1 \& \quad$ For the function $f(x)=\frac{4 x-12}{x+5}$ , complete the following parts. (a) Find $f(x)$ for $x=-1$ and $d$ , if possible. (b) Find the domain of $f$ . (a) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. $\square$ A. $f(-1)=-5$ (Simplify your answer.) B. The value of $f(-1)$ is undefined.

Studdy Solution
State the domain of $f(x)$ .
The domain of $f(x)$ is all real numbers except $-5$ :
$\{ x \in \mathbb{R} \mid x \neq -5 \}$
Solution: (a) $f(-1) = -4$ (b) The domain of $f(x)$ is $\{ x \in \mathbb{R} \mid x \neq -5 \}$ .

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