Answer:
250
Step-by-step explanation:
We can look at this question like a REALLY big elevator.
Imagine you're in a super mall. This mall has thousands of shops and thousands of visitors everyday, all looking to park their cars. To solve this problem, the mall has 500 floors reserved for shopping, and an extra 500 floors reserved for parking.
You went to shop at the mall and bought some clothes on the 120th floor. Then you remembered that it was really busy that day so you had to park on the -130th floor, which is reserved for parking.
How many floors will you have to go down to get to your car?
You first have to go down 120 floors to reach the ground level, and then go down an addition 130 floors to reach their parking level.
[tex]120 + 130 = 250[/tex]
For future reference, we would usually do this by taking the absolute value of the difference between the two numbers.
[tex]| 120 - (-130)| = |120 + 130| = 250[/tex]
