I'm just going to explain the first 2 boxes because the rest is repeat. In the first box you have the value of x so you want to plug it into the equation getting y=-2/3*(-6)+7 getting answer 11. In the box its the opposite, you do -2/3x+7=5 then solve for x
No I disagree, because he had 34 bottles of water at the start but, when he finished he only has 1 left. 34-1=33 so in reality he drank 33 bottles of water.