Answer:
x > -3; (f•g)(x) = -7 / √(x + 3)
Step-by-step explanation:
f•g is another way of writing f(g(x)). Plug in the expression for g(x) into f(x).
f(g(x)) = -7 / √(x + 3)
The denominator can't be 0, so x cannot equal -3.
Also, the expression under the radical can't be negative, so x > -3.
Therefore, the domain is x > -3.
