The graph models the elevation, y, in feet, of a hiker z meters from the start of a hiking trail.
Elevation (in feet)
50
40
30
20
10
400 600 800 1,000
Distance (in meters)
Based on the graph, what is the most reasonable domain for the function?
200
0 0≤z≤ 35
O 0≤ ≤ 800
O z ≥ 35
O z≥ 800
