Find the Domain of the Composite Function F G $$f ( x ) = \sqrt { x } ; g ( x ) = 5 x + 20$$

Multiple Choice

Find the domain of the composite function f g. Write the domain in interval notation.
- $$f ( x ) = \sqrt { x } ; g ( x ) = 5 x + 20$$

A) $[ - 4 , \infty )$
B) $( - \infty , - 4 ] \cup [ 0 , \infty )$
C) $[ 0 , \infty )$
D) $( - \infty , \infty )$