Find the Composition $f ( x ) = x ^ { 2 } + 2 x$

Multiple Choice

Find the composition.
-If $f ( x ) = x ^ { 2 } + 2 x$ and $g ( x ) = x + 4$ , find $( f \circ g ) ( 4 )$

A) 0
B) $2 \sqrt { 3 }$
C) 28
D) 80