Question

Tammy is riding in a bike race that goes through a valley and a nearby mountain range.

The table give the altitude (in feet abvove sea level) for the five checkpoints in the race.

Checkpoint Altitude
(feet above sea level)
1 -164
2 1,441
3 -21
4 2,047
5 -102

(a) The top of a hill rises 139 feet above Checkpoint 1. What is the altitude of the top of the hill?

(b) How much lower is Checkpoint 1 than Checkpoint 2?

Answer 1

for a,
the top of a hill is 139 feet above checkpoint 1, so add 139 to the altitude for checkpoint 1
\(-164 + 139\)

for b, , how much lower is checkpoint 1 than 2
you want the distance between them
\(164+1441\)

Answer 2

I get it now, thank you!