Find $f(g)(x)$ For the Given Functions $f(x)$ And $g(x)$
- $f(x)=7 x+7$

Multiple Choice

Find ( $f(g) (x)$ for the given functions $f(x)$ and $g(x)$ .
- $f(x) =7 x+7$ and $g(x) =x^{2}-5$

A) $49 x^{2}+14 x-7$
B) $x^{2}+7 x+2$
C) $7 x^{2}-28$
D) $x^{2}-7 x-12$