The scatter plot shows the ages of people at a retreat and the number of events they participated in. the equation for the regression line is = –0.5x + 25. based on the equation, which statement is true? a. for each increase of one year of age, the number of events a person participated in decreases by 25. b. for each decrease of one year of age, the number of events a person participated in decreases by 25. c. for each increase of one year of age, the number of events a person participated in decreases by 0.5. d. for each decrease of one year of age, the number of events a person participated in decreases by 0.5.

Find the product of (4x + 3y)(4x − 3y). 16x2 − 24xy + 9y2 16x2 − 9y2 16x2 + 24xy + 9y2 16x2 + 9y2

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?

Which of the following represents the length of a diagonal of this trapezoid?