1) Since we've been told that
Mount Everest 8,848 m
Mount Rainier r
2) We can write that as an algebraic expression, since the height of mount Rainier hasn't been given
The expression is d= 8,848 - r
Since the Everest is the highest mountain in the world.
d = difference
r = Rainier's height
The variable r represents the height of Mount Rainier in meters