Ally's hotel room is on the 12th floor. She parked her car in the underground parking garage 4 floors below ground level. How many floors did Ally travel in the elevator to get from her car up to her room?
A. -8 floors
B. 16 floors
C. 8 floors
D. -16 floors
To get from the underground parking garage to Ally's hotel room on the 12th floor, she needs to travel 12 - (-4) = 16 floors in the elevator.
Therefore, the answer is B. 16 floors
To get from the underground parking garage to her hotel room, Ally needs to travel from 4 floors below ground level to the 12th floor.
To calculate the number of floors Ally traveled, we need to find the difference between the floor she started on and the floor she ended on.
Starting floor: 4 floors below ground = -4
Ending floor: 12
The difference between the starting and ending floor is 12 - (-4) = 12 + 4 = 16
Therefore, Ally traveled 16 floors in the elevator.
The correct answer is B. 16 floors.