A building has 23 floors of offices above ground and 5 floors below ground,
Nathan parks on the 2nd floor below
ground and has an office on the 18th
floor. The ground floor is floor zero,
Which absolute value expression
represents how many floors he must go
up to get from his car to his office?
a. -51 +1 231
b.|-2| + |18|
c. |-5| + |18|
d.|-2| + 231