Find the value of the variable(s) in each figure. Explain your reasoning. Thank you in advance

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

The number of 8th graders who responded to a poll of 6th grade and 8 th graders was one fourtg of the number of 6th graders whi responded if a total of 100 students responddd to the poll how many of the students responded were 6 th graders

What is the approximate value of  x  in the equation below.–3.396–0.7080.3040.955