Can someone me with those questions ? ! i will give you branlists

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?

Rewrite the expression in z to the n power. the expression i was given is: 1 over z to the negative 1 half power.

Skie rented a boat for $16.50 per hour. her total rental fee was $49.50. for how many hours did skie rent the boat