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
If you start at Parking B and take the elevator to the fourteenth floor, how many levels have you gone up?
[Type your answer as a number.]