Answer: weird question but yes they should if there is only 3 
Step-by-step explanation:
 
        
                    
             
        
        
        
It's B because all the students that attended added together is 320 and 37.5 of 320 is 120
 
        
             
        
        
        
Answer:
d)  
 
        
     
 
Step-by-step explanation:
<u><em>Explanation</em></u>
Given expression
            =     
By using 
         (ab)ⁿ = aⁿbⁿ
          
    =     
After simplification , we get
   
  
  
 
 
        
             
        
        
        
Y = 5 - 4x
5 - 4x = x^2 - 2x - 19
0 = x^2 + 2x -24
0 = (x + 6)(x - 4)
Therefore x = -6 (Given) or 4
x = 4, y = -9
(4,-9) is the other solution
        
                    
             
        
        
        
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