Answer
See below.
Work Step by Step
According to the graph:
$R(x)\lt0$ when $x$ is in the interval $(-\infty,-2)\cup(0,1) \cup(1, \infty)$
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.