- $f ( x ) = \frac { 6 } { x + 8 }$

Multiple Choice

$$\text { Use the formula } f ^ { \prime } ( x ) = \lim _ { z \rightarrow x } \frac { f ( z ) - f ( x ) } { z - x } \text { to find the derivative of the function. }$$
- $f ( x ) = \frac { 6 } { x + 8 }$

A) $- \frac { 6 } { ( x + 8 ) }$
B) $- \frac { 6 } { x ^ { 2 } }$
C) $\frac { 6 } { ( x + 8 ) ^ { 2 } }$
D) $- \frac { 6 } { ( x + 8 ) ^ { 2 } }$