Find the Limit by Direct Substitution $\lim _ { x \rightarrow 5 } \frac { 15 x } { \sqrt { x + 4 } }$

Multiple Choice

Find the limit by direct substitution. $\lim _ { x \rightarrow 5 } \frac { 15 x } { \sqrt { x + 4 } }$

A) $\lim _ { x \rightarrow 5 } \frac { 15 x } { \sqrt { x + 4 } }$ = $\infty$
B) $\lim _ { x \rightarrow 5 } \frac { 15 x } { \sqrt { x + 4 } }$ = 77
C) $\lim _ { x \rightarrow 5 } \frac { 15 x } { \sqrt { x + 4 } }$ = 4
D) $\lim _ { x \rightarrow 5 } \frac { 15 x } { \sqrt { x + 4 } }$ = 25
E) $\lim _ { x \rightarrow 5 } \frac { 15 x } { \sqrt { x + 4 } }$ = 7