Appendix A - Review - A.10 Internal Notation; Solving Inequalities - A.10 Assess Your Understanding - Page A87: 31

$ 2\leq x \leq 5$

The given interval uses brackets on both ends so its equivalent inequailty notation would involve $\le$ on both ends. Thus, the given interval can be written as $ 2\leq x \leq 5$. To graph, plot solid dots at $x=2$ and $x=5$, then shade the region in between. See the figure below.