Answer:
y = 3x - 2
Step-by-step explanation:
See Image for all the rest of the equation forms

You are taking two times a number, which is defined as x. That is equivalent to 2x. Then, you are adding three more to that product.
24/3=8
Therefore one third of the can is 8 liters.
24-8=16.
Peter has to fill 16 liters.
won't it be 3.2 because A square has four sides so you multiply 0.8 by 4