Question

PLEASE PLEASE PLEASE HELP I really don’t understand this.

Answer 1

Answer:

The second option is the answer.

Step-by-step explanation:

Do f(x) first, and then plug that into g(x).

$f(x)=\sqrt{x+3}$

$(g o f)(x) = \frac{\sqrt{x+3}^{2}+2 }{\sqrt{x+3}}=\frac{x+5}{\sqrt{x+3}}$