Which stations are examples of opposite quanties adding to zero? Select all that apply
A Alan begins on the ground floor of a building takes the elevator
A
down 2 levels to the garage and then climbs the stairs up 2
levels
B Brandy opens a bank account deposts $225, and then wrtes a
check for $225
C A car drives 20 feet forward tums left and drives another 20 feet
DA hot air balloon begins 25 feet above the ground ascends 75
feet and then descends 100 feet