What is the answer to this problem?

Question

What value(s) are omitted from the domain of f(g(x) if f(x)= 1/2 and g(x)= x-3?

Answer 1

f(g(x)) = 1/2 regardless of what x is,

plug in any x you get f(x) = 1/2

there is no restriction on x. the domain is all real numbers

Graphically, f(x) or f(g(x)) is a flat horizontal line intersecting the y axis at y= 1/2

x can be anything, from negative infinity to positive infinity. g(x) can be any real value,

and so can x.