Answer:
The plane is at an altitude of 3597 feet
Step-by-step explanation:
Airplane is flying at an altitude of 3000 feet.
Now it dives 630 feet, then the altitude is 2370 (3000-630).
Then it rapidly climbs 1048 feet, then the altitude will be 3418 (2370+1048).
Then it again drops 888 feet, meaning now its at at altitude 2530 (3418-88).
Then it again climbs 1067 feet, now the altitude will be 3597 (2530+1067)
Therefore, the plane is at an altitude of 3597 feet. (Assuming that Again 888 feet before making another climb of 1067 feet has been typed twice by mistake. I considered only 1 drop of 888 and climb of 1067)