Sea level is the average level of the sea between high and low tide. It is used as a reference point for measuring elevation, or height and depth, on Earth. Some places lie above sea level, while others lie below sea level.

Question

The lowest point in New Orleans is 8 feet below sea level. You can represent that numerically using
.
The highest point in Chicago is 735 feet above sea level. You can represent that numerically using
.

Answer 1

To represent the elevations in New Orleans and Chicago numerically:

• The lowest point in New Orleans, which is 8 feet below sea level, can be represented as -8 feet.
• The highest point in Chicago, which is 735 feet above sea level, can be represented as 735 feet.