Sarah has saved $56 of her allowance money to buy books. if she buys 6 books at d dollars per book , she will have 56-6d of her allowance left. how much does she have left if the books cost $4.75 each?

Graph a triangle (xyz) and reflect it over the line y=x to create triangle x’y’z’. describe the transformation using words. draw a line segment from point x to the reflecting line, and then draw a line segment from point x’ to the reflecting line. what do you notice about the two line segments you drew? do you think you would see the same characteristics if you drew the line segment connecting y with the reflecting line and then y’ with the reflecting line? how do you know?