For the Given Functions F and G, Find the Requested $f ( x ) = x - 8 ; g ( x ) = 7 x ^ { 2 } ; \quad$

Multiple Choice

For the given functions f and g, find the requested function and state its domain. Write the domain in interval notation.
- $f ( x ) = x - 8 ; g ( x ) = 7 x ^ { 2 } ; \quad$ Find $f - g$ .

A) $( f - g ) ( x ) = - 7 x ^ { 2 } + x - 8 ; ( \infty , \infty )$
B) $( f - g ) ( x ) = 7 x ^ { 2 } - x + 8 ; ( \infty , \infty )$
C) $( f - g ) ( x ) = 7 x ^ { 2 } + x - 8 ; ( \infty , \infty )$
D) $( f - g ) ( x ) = - 7 x ^ { 2 } + x - 8 ; ( \infty , 8 ) \cup ( 8 , \infty )$