Answer:
C. 
Step-by-step explanation:
Given that A and B are matrices and  is a scalar, then the distributive property of scalar multiplication over addition is given by;
 is a scalar, then the distributive property of scalar multiplication over addition is given by;

The distributive property of scalar multiplication over subtraction is 

The correct answer is C.
 
        
                    
             
        
        
        
11 drinks because 85x11 = £9.35
        
             
        
        
        
Answer:
 12.55
Step-by-step explanation:
Add them so its 12.55
 
        
                    
             
        
        
        
If you are trying to get y by itself I shown my work.