Given $f ( x ) = 5 x + 4$ , evaluate $\frac { f ( x - 9 ) - f ( 9 ) } { x }$ .
A) $\frac { 5 x - 90 } { x }$
B) $\frac { 5 x - 72 } { x }$
C) $\frac { 5 x + 90 } { x }$
D) $\frac { 5 x - 10 } { x }$
E) $x$

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The Answer of Given $f ( x ) = 5 x + 4$ , evaluate $\frac { f ( x - 9 ) - f ( 9 ) } { x }$ .
A) $\frac { 5 x - 90 } { x }$
B) $\frac { 5 x - 72 } { x }$
C) $\frac { 5 x + 90 } { x }$
D) $\frac { 5 x - 10 } { x }$
E) $x$

Given f(x)=5x+4f ( x ) = 5 x + 4f(x)=5x+4 , Evaluate

Given $f ( x ) = 5 x + 4$ , Evaluate