Answer:
I think 7
Step-by-step explanation:
4 , 8 , 9 and 12 has factors.
7 has no factor.
4= 2×2
8= 2×4
9= 3×3
12= 3×4
40 + x is correct!
528
because each class has 22 students and there are 24 classes you multiply them
The answer is
