Answer:
(D) f(x)=√x, g(x)=x+7
Explanation:
Given the functions:
[tex]\begin{gathered} f(x)=\sqrt[]{x} \\ g(x)=x+7 \end{gathered}[/tex]
The composite function h(x)=(f o g)(x) is:
[tex]\begin{gathered} h(x)=(f\circ g)(x) \\ =f(g(x)) \\ =\sqrt[]{g(x)} \\ =\sqrt[]{x+7} \end{gathered}[/tex]
The correct choice is D.
