Question

From a mountain side 418 meters above sea level, Jess took off in his helicopter and descended 88 meters before climbing 120 meters. What is Jess's elevation now?

Answer 1

He started at 418 above sea level. descended means he moved down so subtract 88 from 418:

418 - 88 = 330 feet.

He then climbed 120, so now add that to the 330:

330 + 120 = 450

He is now at 450 feet above sea level.