For the Given Functions F and G, Find the Composition $f ( x ) = x ^ { 3 } + 7 x ; g ( x ) = 2 x \quad$

Multiple Choice

For the given functions f and g, find the composition.
- $f ( x ) = x ^ { 3 } + 7 x ; g ( x ) = 2 x \quad$ Find $( g \circ f ) ( x )$

A) $8 x ^ { 3 } + 14 x$
B) $2 x ^ { 3 } + 14 x$
C) $8 x ^ { 2 } + 14 x$
D) $2 x ^ { 3 } + 7 x$