The top of a hill rises 276 feet above Checkpoint 3. What is the altitude of the top of the hill?

Answer 1

Hello Collyns, you didn't include a drawing of the problem, but based on the info provided in the problem:

the top of a hill rises 276 feet above Checkpoint 3 means: the top of the hill is at an altitude that's 276 feet higher than Checkpoint 3.

So: take the altitude of Checkpoint 3, ADD 276 feet to it, and you get the altitude at the top of the hill.