X=60 and y=20
x and y can be many things that answers the question to 120
y = 80x - 60
Answer is B. y = 80x - 60
Double check:
When x = 1, y = 80(1) - 20 = 80 -60 = 20
When x = 2, y = 80(2) - 20 = 160 -60 = 100
When x = 3, y = 80(3) - 20 = 240 -60 = 180
When x = 4, y = 80(4) - 20 = 320 -60 = 260
When x = 5, y = 80(5) - 20 = 400 -60 = 340
Okay. So, you want to figure out how many liters he pours into each truck? Well, you know he has 3 tucks, with 12 liters of oil. So, you will divide 12 by 3, and get 4. SO, he pours about 4 liters of oil into each truck.