Question

The domain of f(x) is the set of all real values except 7, and the domain of g(x) is the set of all real values except –3. What describes the domain of (gºf)(x)?

Answer 1

hi
if 7 is not in the domain of \(f\) then you cannot take \[g(f(7))\] for one

Answer 2

also if \(-3\) is not in the domain of \(g\) then the number \(a\) for which \(f(a)=-3\) is also out

Answer 3

of course you don't know what that number is, so just stay that