Note: For the next part, your answer should use interval notation. An answer of the form \((-\infty, a)\) is expressed (-infty, a), an answer of the form \((b, \infty)\) is expressed (b, infty), and an answer of the form \((-\infty, a) \cup (b, \infty)\) is expressed (-infty, a)U(b, infty).