Let $\displaystyle{ f(x) = \begin{cases} x + 7 & \text{if } x \leq -3, \\ 3x + 11 & \text{if } x > -3 \end{cases} }$ Approximate the limit both numerically and graphically: $\displaystyle{ \lim\limits_{x \to -3} f(x) =}$ (Enter DNE if the limit doesn’t exist)