Question

An elevator starts at the lobby and makes 44 stops. The positive numbers stand for going up, and the negative numbers stand for going down. Which expression gives the total number of floors traveled during the 44 stops?

a.|9+-12+5+8|
b.9-12+5-8
c.|9|+|12|+|5|+|-8|
d.|(+9)+(-12)+(+5)+(-8)|

Answer 1

is c

Explanation:

Answer 2

C does.
We only want to add whole positive numbers.
C does this by taking the absolute values of the numbers (-8) turns in to +8.
The other choices would take away from the overall total of floors traveled.