describe quantities that combine to make 0?
Jacoby went on a hiking trip on the Rocky Bend Loop. Starting at an elevation of 1,200 feet, he hiked up the eastern trail leading to a change in elevation of 782 feet to get to the campsite. The next day he hiked down the western trail which had a change in elevation of 782 feet to get back to his car.
Marcus runs a sightseeing service in the Appalachian Mountains. The first leg of the tour is a 16.2mile horseback ride from the stables up the side of a mountain. The second leg of the tour is a 20.6mile four-wheeler ride taking a different

Question

describe quantities that combine to make 0?
   Jacoby went on a hiking trip on the Rocky Bend Loop. Starting at an elevation of 1,200 feet, he hiked up the eastern trail leading to a change in elevation of 782 feet to get to the campsite. The next day he hiked down the western trail which had a change in elevation of 782 feet to get back to his car.  
   Marcus runs a sightseeing service in the Appalachian Mountains. The first leg of the tour is a 16.2mile horseback ride from the stables up the side of a mountain. The second leg of the tour is a 20.6mile four-wheeler ride taking a different