The maximum amount of weight the truck can carry is 1600lbs. You do not want to exceed 1600lbs, but you can reach 1600lbs. This makes the inequality symbol ≤. This symbol says that the weight load has to be less than 1600lbs, but It can equal 1600lbs. You know that the piano is 400lbs and each box is 50lbs. Since you want to figure out how many boxes you can put on the truck alongside the piano, you can use the inequality: 50x + 400 ≤ 1600.
Since they’re both in standard form and they both say that y is equal to something, you just have to set them up with one another 2x-10=4x-8 Subtract 2x -10=2x-8 Add 8 -2=2x Divide by 2 -1=x x=-1 Check it by inserting it 2(-1)-10=4(-1)-8 -2-10=-4-8 -12=-12 So x=-1 is the answer
