Step-by-step explanation:
You add all the numbers & divide it by how many numbers 8 +9+9+9+10+10
If there is 23 classrooms and each has 10 then you would have to times 23 by 10 - 23x10=230
1- y= x/2 + 2
2- y= 3x +1
3- y= x/2 - 2
4- y= 3x - 1
Pretty sure its B but if im wrong please dont be mad.