For the Pair of Functions, Find the Indicated Sum, Difference $$f ( x ) = 6 - 7 x , g ( x ) = - 9 x + 7$$

Multiple Choice

For the pair of functions, find the indicated sum, difference, product, or quotient.
- $$f ( x ) = 6 - 7 x , g ( x ) = - 9 x + 7$$
Find $( f + g ) ( x )$ .

A) $- 9 x + 6$
B) $2 x + 13$
C) $- 16 x + 13$
D) $- 3 x$