On a number line, the surface of a river is marked at −220 feet and the top of a building is marked at +19 feet, where 0 represents sea level. What do −220 and +19 represent?

Question

skullpatrol · Answer

Any ideas?

skullpatrol · Answer

Think about what "where 0 represents SEA LEVEL" means?

skullpatrol · Answer

The level of the sea does not change, right?

Note, we measure heights above and below that level..

carmen · Answer

the answer is below sea leve;

carmen · Answer

ty

skullpatrol · Answer

Yes, -220 represents 220 feet below sea level 

and +19  represents 19 feet above sea level. 

:-)