I believe the answer is "C"
y = ax^2
If the absolute value of a is <1 the graph is wider than when a = 1
If the absolute value of a is >1 the graph is narrow than when a = 1
The only function that fits that description is
y = 2x^2
No because it does not pass the vertical line test,
meaning that a single vertical line could pass through multiple points on the graph.
There are a total of 6 groups.
And each group contains at least 4 students.
So the minimum number of students is:
minimum = 6 * 4 = 24 students
Let us say that x represents the number of students,
hence:
<span>x ≥ 24</span>