Commutative property says you can change

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

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?

A. 120 degrees b. 90 degrees c. 30 degrees d. 60 degrees