Answer
$0\leq x\lt45\cup x\gt 70$
Work Step by Step
Let $x$ be the speed on the highway in mph. Then the illegal range is $0\leq x\lt45\cup x\gt 70$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.