A rational function is defined as f(x)=x2−9x−3f(x) = \frac{x^2 - 9}{x - 3}f(x)=x−3x2−9. Which statement is true?
The function has a vertical asymptote at x=3x = 3x=3
The function simplifies to f(x)=x+3f(x) = x + 3f(x)=x+3 for all xxx
The function has a removable discontinuity (hole) at x=3x = 3x=3
The domain of fff includes all real numbers except x=−3x = -3x=−3 and x=3x = 3x=3