Find $( f \circ g ) ( x )$ $f ( x ) = x ^ { 2 } - 4 x \text {, and } g ( x ) = \sqrt { x + 9 }$

question 5

Multiple Choice

Find $( f \circ g ) ( x )$ . $f ( x ) = x ^ { 2 } - 4 x \text {, and } g ( x ) = \sqrt { x + 9 }$

• A) \(( f \circ g ) ( x ) = x + 9 - 4 \sqrt { x + 9 }\)
• B) \(( f \circ g ) ( x ) = \sqrt { x ^ { 2 } - 4 x }\)
• C) \(( f \circ g ) ( x ) = \sqrt { x ^ { 2 } - 4 x } + 9\)
• D) \(( f \circ g ) ( x ) = \left( x ^ { 2 } - 4 x \right) \sqrt { x + 9 }\)
• E) \(( f \circ g ) ( x ) = \sqrt { x ^ { 2 } - 4 x + 9 }\)

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