Question

An elevator goes up 7 floors and then down 4 floors. What integer represents the change in the floor level?

Answer 1

3

Going up 7 and then down 4 can be represented by 7-4=3

Answer 2

Answer:

3 floors.

Step-by-step explanation:

We have been given that an elevator goes up 7 floors.

We know that going up is a positive altitude, so 7 floors up will be positive 7.

Then the elevator comes down 4 floors. We know that coming down is a negative altitude, so coming down 4 floors would be $-4$ floors.

The change in the floor would be $+7-4=3$ floors.

Therefore, the change in the floor level is 3 floors.