5. A 3 cm by 3 cm square piece of cardboard was cut from bigger square cardboard. The area of the remaining cardboard was 40cm2. If x represents
the length of the bigger cardboard, which of the following expressions give the
area of the remaining piece?
C. 52-9
A. 8-9
B. 52 + 9
D. 32 + 40

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?