The stem-and-leaf plot shows the heights in centimeters of teddy bear sunflowers grown in two different types of soil. soil a

soil b

5

9

5 2 1 1

6

3 9

5 1 0

7

0 2 3 6 7 8

2 1

8

3

0

9

key: 9|6 means 69

key: 5|8 means 58

calculate the mean of each data set.

calculate the mean absolute deviation (mad) of each data set.

which set is more variable? how do you know?

The scatterplot represents the total fee for hours renting a bike. the line of best fit for the data is y = 6.855x + 10.215. which table shows the correct residual values for the data set?

Def rotates 90 clockwise about point a to create d’ e’ f’. therefore, which equation must be true ?

Runners run around the school's football field. the cross country coach determines that the width of the field is seventy yards shorter than the length. part a write an expression that represents the perimeter of the football field. let x represent the length of the football field. include parentheses in your expression. next, write an equivalent expression that does not include parentheses. what property or properties did you use to simplify? explain. part b the cross country coach later determines that the length of the football field is 120 yards. all students must run five laps. using your answer from part a, determine the actual number of yards that each athlete must run in the tryouts. in order to make the team, students must complete the laps in 6 minutes. how quickly must they run each lap?