What is the domain of f(x)=15/x-3?

Question

the choices are:

1. All integer values of x
2. x<0 or x>0
3. x≤-3 or x≥3
4. x≠3
5. x<-3 or 0<x<3

Answer 1

when the denominator is zero, f(x) is undefined. So, assuming you meant 15/(x-3)

#4