Mary Ann is comparing the first year costs of attending a two year and four year university. The results are shown in the tables below. If Mary Ann's family invests $8,000 in a savings account that has 7.5% compound interest for 10 years, how much more money will her family need to save in order to go to the 4 year college for one year?

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?