Answer:
40%
Step-by-step explanation:
So, there are 60 students for B. So, what I did was add all the students to get 150. Then I divided 60 by 150 (60/150) to get 0.4. 0.4 * 100 is 40 which is the percent. Hope this helps.
 
        
             
        
        
        
Answer:
D
Step-by-step explanation:
 
        
                    
             
        
        
        
Here are a few ratios that are equivalent to  4 : 11  . . . . .
8 : 22
12 : 33
20 : 55
400 : 1100
308 : 847
4 billion : 11 billion 
        
                    
             
        
        
        
Multiply -1 by -7 
-9x^3 + 8x^2 - 7x/6 + 7
        
             
        
        
        
I believe the answer is # 4