*) The Brady family hikes the South Kaibab Trail down to the bottom of the Grand Canyon. 2
Their elevation changes by an average of mile per hour for the first 3 hours.
11
• Which expressions represent the Bradys' change
in elevation for the first three hours of their hike?
Choose ALL that apply.
3:
( )
2
3
+
2
: 3
11
3
3- (†)