Answer:
The absolute value of a number is always positive.
if x > 0 , then = x
if x < 0 , then |-x| = x
Use the absolute value.
To find an expression for: An elevation of 250 feet.
Elevation mean the height of a place above the sea level.
An elevation of 250 feet = +250
then, using absolute value:
Size of each amount,
