What is the midpoint of np if n (1,9) and p (-5-1)

Ahiking trail is 6 miles long. it has 4 exercise stations, spaced evenly along the trail. what is the distance between each exercise station?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks