Answer:
Inequality for each group is
where x is the number of students in a group.
The inequality for the entire class is
There are at least 24 students in the class.
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Step-by-step explanation:
x = number of students per group
We have at least 3 students per group, which means x = 3 is the lowest we can go. This forms the inequality

Use the multiplication property of inequality to multiply both sides by 8 because we have 8 equal groups

There are at least 24 students in the class. In other words, there are 24 or more students in the class.