ANSWER:
[tex]\begin{gathered} \frac{x}{4}\leq5 \\ \\ x\leq20 \end{gathered}[/tex]STEP-BY-STEP EXPLANATION:
Let x be the number of students in the class, we can establish the following inequality:
[tex]\begin{gathered} \frac{x}{4\:}\le 5 \\ \\ \text{ We solve for x} \\ \\ \frac{x}{4\:}\cdot4\le5\cdot4 \\ \\ x\:\le20 \end{gathered}[/tex]Which means that the number of students is a maximum of 20 students