What is an expression that compares two or more numbers

If you could answer these your a life saver

Iwill give brainliest. suppose tommy walks from his home at (0, 0) to the mall at (0, 5), and then walks to a movie theater at (6, 5). after leaving the theater tommy walks to the store at (6, 0) before returning home. if each grid square represents one block, how many blocks does he walk?

X-10/4 when x = –18 a 7 b –2 c –7 d 2