A classroom can accommodate less than 21 students.

Which of the following inequalities represents the number of students the classroom can accommodate?

x<21

Step-by-step explanation:

How I always do it is I write down the number that was in the problem. So write down 21. Next I write down less. Then, if it says less, then the inequality sign's open side will face the number. This will be the opposite if the problem says more