Based on the graphs of f (x) and g(x), what must the domain of (f ⋅ g)(x) be?
{x ∈ ℝ | x ≠ 3}
{x ∈ ℝ | x ≠ –3, 1}
{x ∈ ℝ | x ≠ –3, 1, 3}
{x ∈ ℝ}
