Answer:
let y be the total number of students.
y×40/100=18
18×100/40=y
45=y
Step-by-step explanation:
-y = -2x + 3
y = 2x - 3
y - 1 = 2(x - 1)
y - 1 = 2x - 2
y = 2x - 1
answer is B
