Answer:
4
Step-by-step explanation:
Each bar represents a range in area. The first bar represents the number of houses with an area of more than 50 but less than 100. It's height is 4, so there are 4 of those houses.
It will be $3.68 for each rose bush because if she bought 6 of them for $22.08 then 22.08/6=3.68
12xy i think lol :) hope that helps a bit