In mathematical form, it would be: 2x ≥ 40
x ≥ 20
Hope this helps!
        
             
        
        
        
The first question is c i believe, I dont have time to answer the others
 
        
                    
             
        
        
        
Answer:
I believe it would be A bc 
Step-by-step explanation:
A= 42
B= 32
C= 20
D= 36
 
        
             
        
        
        
The movies of 120 min or less than 120 mins are 100
Further explanation:
A histogram is a visual representation of data.
In the given histogram we can see that
5 movies are 0 to 30 minutes, 10 movies are 31 to 60 minutes, 30 movies are 61 to 90 minutes, 55 movies are 91 to 120 minutes, and 15 movies are over 120 minutes.
In order to find the number of movies which are 120 minutes long or less than 120 minutes we will add up all the number of movies with 120 length and less than that
So,

The movies of 120 min or less than 120 mins are 100
Keywords: Histogram, reading histograms
Learn more about histograms at:
#LearnwithBrainly
 
        
             
        
        
        
Answer:
The length is 10 cm
Step-by-step explanation:
The area is given by length times width
A = l*w
We have an area of 80 cm^2 and a width of 8
80 = l*8
Divide each side by 8
80/8 = 8l/8
10 = l
The length is 10 cm