timed! answer quickly! (provide explanations if possible.)which function and domain could represent the given graph? a: f(x) = 1 – [x]; –3 < x < 3 b: f(x) = 1 + [x]; –3 ≤ x ≤ 3 c: f(x) = –[x]; –3 ≤ x ≤ 3 d: f(x) = [x]; –3 < x < 3