Final answer:
The normal range of students in a class can be represented by the inequality 20 ≤ x ≤ 30, where 'x' represents the number of students.
Step-by-step explanation:
The normal range of students in a class can be represented by an inequality. Let's assume that the normal range is between 20 and 30 students. We can use the inequality 20 ≤ x ≤ 30, where 'x' represents the number of students in the class. This inequality states that the number of students must be greater than or equal to 20 and less than or equal to 30.