Given F(x) and G(x), Find the Indicated Composition and State $f ( x ) = x ^ { 2 } - 25$

Multiple Choice

Given f(x) and g(x) , find the indicated composition and state its domain.
-For $f ( x ) = x ^ { 2 } - 25$ and $g ( x ) = 2 x + 3$ , what is the domain of $f \circ g$ ?

A) $( - \infty , \infty )$
B) $[ 0 , \infty )$
C) $( - 5,5 )$
D) $[ 5 , \infty )$