Find the Indicated One-Sided Limit $\infty$ Or - $\infty$ $$\lim _ { x \rightarrow 4 ^ { - } } f ( x )$$

Short Answer

Find the indicated one-sided limit. If the limiting value is infinite, indicate whether it is + $\infty$ or - $\infty$ . $$\lim _ { x \rightarrow 4 ^ { - } } f ( x )$$ where $$f ( x ) = \left\{ \begin{array} { c c } x ^ { 2 } & \text { if } x \leq 4 \\x + 8 & \text { if } x > 4\end{array} \right.$$