Find the Limit by Direct Substitution $\lim _ { x \rightarrow - 3 } \sqrt { x + 84 }$

Multiple Choice

Find the limit by direct substitution. $\lim _ { x \rightarrow - 3 } \sqrt { x + 84 }$

A) $\lim _ { x \rightarrow - 3 } \sqrt { x + 84 }$ = 7
B) $\lim _ { x \rightarrow - 3 } \sqrt { x + 84 }$ = 9
C) $\lim _ { x \rightarrow - 3 } \sqrt { x + 84 }$ = 84
D) $\lim _ { x \rightarrow - 3 } \sqrt { x + 84 }$ = $\infty$
E) $\lim _ { x \rightarrow - 3 } \sqrt { x + 84 }$ = 81