Question

describing a possible scenario for a table
hiking elevation(feet)
assuming two hikers begin at a trail - start, which scenarios must be true based on the table? check all that apply.
time (min) melissa corey
0 8,342 10,004
30 9,550 11,432
60 11,239 12,921
90 12,921 11,075
120 12,921 10,004
melissa and corey started on different trails.
melissa hiked up the trail for a longer period of time than corey.
melissa and coreys elevations were same at some time between 60 and 90 minutes.
corey began his descent before melissa.
as melissas time increased from 0 to 60 minutes her elevation decreased.

Explanation:

Step1: Analyze starting points

At time = 0, Melissa's elevation is 8,342 feet and Corey's is 10,004 feet. Since they have different starting - point elevations, they could have started on different trails.

Step2: Analyze time durations

The table only gives discrete time - points. We cannot say for sure that Melissa hiked up the trail for a longer period of time just from this table.

Step3: Check for equal elevations

There is no time value between 0 and 90 minutes in the table where their elevations are the same.

Step4: Analyze descent

There is no indication in the table that Corey began his descent before Melissa.

Step5: Analyze Melissa's elevation change

From 0 to 60 minutes, Melissa's elevation increased from 8,342 feet to 11,239 feet, not decreased.

Answer:

Melissa and Corey started on different trails.