Answer:
6 students
Step-by-step explanation:
Given data
Base charge= $40
charge per student = $30
We are told that for s number of student the tutor charged 220
The expression for the tutor's charges is given as
y= 40+30s
Therefore for y= 220, let us find s, the number of students
220=40+30s
220-40= 30s
180=30s
divide both sides by 30
s= 180/30
s= 6
Hence there are 6 students
