For the Given Functions F and G, Find the Requested $$f ( x ) = 3 - 3 x ; g ( x ) = - 5 x + 3$$

For the given functions f and g, find the requested function and state its domain.
- $$f ( x ) = 3 - 3 x ; g ( x ) = - 5 x + 3$$
Find $f + g$ .

A) $( f + g ) ( x ) = - 8 x + 6$ ; all real numbers
B) $( f + g ) ( x ) = - 2 x$ ; all real numbers
C) $( f + g ) ( x ) = - 5 x + 3 ; \left\{ x \mid x \neq \frac { 3 } { 5 } \right\}$
D) $( f + g ) ( x ) = 2 x + 6 ; \{ x \mid x \neq 3 \}$