Use a CAS to Plot the Function near the Point $$\lim _ { x \rightarrow 3 } \frac { x ^ { 2 } - 9 } { \sqrt { x ^ { 2 } + 7 } - 4 }$$

Multiple Choice

Use a CAS to plot the function near the point x0 being approached. From your plot guess the value of the limit.
- $$\lim _ { x \rightarrow 3 } \frac { x ^ { 2 } - 9 } { \sqrt { x ^ { 2 } + 7 } - 4 }$$

A) 3
B) 8
C) $\frac { 1 } { 4 }$
D) 4