Diana sold 336 muffins at the bake sale. bob sold 287 muffins . bob estimates that he sold 50 fewer muffins than diana . how did he estimate? explain

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)