Question

charlie 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.
checkpoint,altitude (feet above sea level)
checkpoint 1,0
checkpoint 2,1363
checkpoint 3, - 130
checkpoint 4,2286
checkpoint 5, - 195
(a) which checkpoint is the farthest below sea level? checkpoint 1 checkpoint 2 checkpoint 3 checkpoint 4 checkpoint 5
(b) which checkpoint is the farthest above sea level? checkpoint 1 checkpoint 2 checkpoint 3 checkpoint 4 checkpoint 5
(c) what does it mean for a checkpoint to have a positive altitude? it is at sea level. it is below sea level. it is above sea level.

Explanation:

Step1: Identify negative altitudes

Checkpoints 3 (-130 feet) and 5 (-195 feet) are below sea - level. Compare their magnitudes. The magnitude of - 130 is 130 and the magnitude of - 195 is 195. Since 195>130, Checkpoint 5 is the farthest below sea - level.

Step2: Identify positive altitudes

Checkpoints 2 (1363 feet) and 4 (2286 feet) are above sea - level. Compare their values. Since 2286>1363, Checkpoint 4 is the farthest above sea - level.

Step3: Understand altitude sign

A positive altitude means the height is measured above the reference point, which is sea - level in this case.

Answer:

(a) Checkpoint 5
(b) Checkpoint 4
(c) It is above sea level.