An aircraft takes off at sea level and ascends to 1000 feet. It then descends 250 feet. Find the elevation of the aircraft.

Answer:
750
Step-by-step explanation:
If we go up 1000 feet from sea level and then come down 250 from that, then we are being asked to compute the difference of 1000 and 250.
1000
- 250
---------
750
We are 750 feet above sea level.
Answer:
1,250
Step-by-step explanation:
The answer would be 1,250 because you would add 1,000 and 250 to get the total elevation of the air craft.