212 
/ \
2 106
/ \
2 53 
2800 
/ \
2 1400
/ \
2 700
/ \
2 350
/ \
2 175
/ \
5 35
/ \
5 7
/ \
7 1
900 
/ \
2 450
/ \
2 225
/ \
3 75
/ \
3 25
/ \
5 5
/ \
5 1
This might help if you need it again
        
             
        
        
        
Answer:
84 
Step-by-step explanation:
find the area of each shape and add them together
 
        
             
        
        
        
Answer:
Dot plot
Step-by-step explanation:
Each dot on on 0.84 represents each plane. 5 planes had a average cruising speed of 0.84.
 
        
             
        
        
        
Part A: 15MPH
Part B: 22.5MP
I could provide an explanation if needed.
(a brainliest would be appreciated)