Question

Marcus Dives from the surface of the ocean to a reef 18 Meters below sea level what integer represents Marcus's location relative to the surface how far does Marcus have to go to return to the surface

Answer 1

Marcus position: -18 meters

Explanation:

We establish a reference system where the zero height is on the sea surface. Then all height below the sea surface is negative.

~--~---~---~---~sea--~---~---~---~---~- 0 meters ---~---~----~---~---~---~---~--

|

|

|

⊥ Marcus: - 18 meters

So the position of marcus is: -18 meters above sea level.

To return to the surface you must move 18 meters up.