Definition: A histogram visualises the distribution of data over a continuous interval or certain time period. Each bar in a histogram represents the tabulated frequency at each interval. 
According to the given histogram,
0-20 years occur 15 times,
21-40 years occur 40 times,
41-60 years occur 40 times,
61-80 years occur 15 times.
This shows that the data is symmetrical and the majority of the attendees were between the ages of 21 and 60 (40 times).
Answer: correct choice is B. 
 
        
                    
             
        
        
        
Take a look at the photo attached.
 
        
        
        
Answer: -5/2
Step-by-step explanation:
(-9-1)/(4-0) = -10/4 = -5/2
 
        
             
        
        
        
Answer:
Peytons car travels 14.8 miles less than Madeline's car in with one gallon 
Step-by-step explanation:
peytons car uses 1 gal to travel 22.1 miles and Madeline's care uses 1 gal to travel 36.9. 36.9-22.1 = 14.8 
ta da