For the Given Functions F and G , Find the Indicated

question 485

Multiple Choice

For the given functions f and g , find the indicated composition.
- $$\begin{array} { l } f ( x ) = \sqrt { x - 1 } , \quad g ( x ) = - \frac { 7 } { x } \\( g f ) ( x ) \end{array}$$

• A) \(\sqrt { - \frac { 7 } { x } - 1 }\)
• B) \(- \frac { 1 } { \sqrt { 7 x - 1 } }\)
• C) \(\frac { 7 } { \sqrt { - x - 1 } }\)
• D) \(- \frac { 7 } { \sqrt { x - 1 } }\)

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