Question

omar is riding in a bike race that goes through a valley and a nearby mountain range. the table gives the altitudes (in feet above sea level) for the five checkpoints in the race.
use the table to answer the questions.
(a) which checkpoint is the farthest above sea level?
checkpoint 1 checkpoint 2 checkpoint 3 checkpoint 4 checkpoint 5
(b) which checkpoint is the farthest below sea level?
checkpoint 1 checkpoint 2 checkpoint 3 checkpoint 4 checkpoint 5
(c) what does it mean for a checkpoint to have an altitude of 0 feet?
it is above sea level.
it is below sea level.
it is at sea level.

Explanation:

Step1: Compare positive altitudes

Among \(2617\), \(1230\), positive values. Since \(2617>1230\). Checkpoint 1 has a higher positive altitude than Checkpoint 4. Checkpoint 3 is \(0\), Checkpoint 2(\(- 187\)) and Checkpoint 5(\(-101\)) are negative.

Step2: Compare negative altitudes

For negative numbers, \(\vert-187\vert = 187\) and \(\vert-101\vert=101\). Since \(187 > 101\), \(-187<-101\). So Checkpoint 2 is farther below sea - level than Checkpoint 5.

Step3: Analyze altitude of 0

By definition, an altitude of \(0\) means the point is at sea level.

Answer:

(a) Checkpoint 1
(b) Checkpoint 2
(c) It is at sea level.