Question

The top of a hill rises 171 feet above sea level checkpoint 4 is a - 183 what is the altitude of the top of the Hill

Answer 1

The top of a hill rises 171 feet above checkpoint 4.

From the given table, checkpoint 4 is at -183 feet above sea level.

This means that the top of the hill is

`171+(-183)=171-183=-12\: \text{feet}`

Therefore, the altitude of the top of the hill is -12 feet.

Part (b)

How much lower is checkpoint 5 than checkpoint 1?

From the given table, checkpoint 1 is at 1,415 feet and checkpoint 5 is at -132 feet above sea level

The difference between them is

`1,415-(-132)=1,415+132=1547\text{ feet}`

Therefore, checkpoint 5 is 1547 feet lower than checkpoint 1.