So the lobby would be the 1st floor, and the level you parked your car on would be the -3rd level.
15+3 would be 18. So you are 18 levels away from your car
The answer would be C. Move eight units right on the X axis and two units down on the Y axis.
The avenues are merely a simple illustrations of a Cartesian Plane which compose of coordinates, x axis, y axis and the slope of each points. in your problems the North to South avenue is the Y axis and the East to West is the X axis. its coordinates are (10,0), (0,11) and (0,13)
