4. The solution to a system of linear inequalities is shown below. Part A:
Determine a solution to this system of inequalities. Write your answer as an ordered pair and
explain how you know it is a solution.
Part B:
Write a system of two linear inequalities that would have the solution shown in the graph.

What is the equation of this graphed line? enter your answer in slope-intercept form in the box.

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

The school track has eight lanes. each lane is 1.25 meters wide. the arc at each end of the track is 180. the distance of the home straight and the radii for the arcs in the 1st 4 lanes are given. s=85m r1=36.5m r2=37.75m r3=39m r4=40.25m part one: find the radii of lanes 5 through 8 of the track. show your work. part two: if max ran around lane one, how far did he run? show your work and explain your solution. part three: max wants to run a total of three laps around the track, choose two additional lanes (2-8) for him to run and find the distance around those two lanes. show your work and round to the hundredths. part 4: based on your lane choices in part three, what was the total distance max ran in the three laps around the track?