For the Given Functions F and G , Find the Indicated

question 311

Multiple Choice

For the given functions f and g , find the indicated composition.
- $$f ( x ) = \sqrt { x + 4 } , \quad g ( x ) = - \frac { 5 } { x }$$
$( g f ) ( x )$

• A) \(- \frac { 1 } { \sqrt { 5 x + 4 } }\)
• B) \(\sqrt { - \frac { 5 } { x } + 4 }\)
• C) \(\frac { 5 } { \sqrt { - x + 4 } }\)
• D) \(- \frac { 5 } { \sqrt { x + 4 } }\)