A large downtown hotel consists of twenty-four levels. Twenty-two of the levels lie above ground and two of the levels are reserved for underground parking. Above ground levels are called "floors," however, the
first floor is also referred to as the "ground level." The first level below ground level is Parking A, and the
second level below ground level is labeled Parking B.
Use the provided horizontal number line to help you answer the following questions.
-5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Write an addition expression to represent the following scenario. Then, determine which level the
attendant is on.
A valet attendant parks a car in Parking B, takes the elevator up six levels, and then takes the elevator down three
levels.