Answer:
B
Step-by-step explanation:
2x-5y=13.........(1) × 3
-3x+2y=13.......(2) × 2
6x - 15y = 39
-6x + 4y = 26
Adding
6x - 6x - 15y + 4y = 13 + 13
 
        
                    
             
        
        
        
Answer:
$17
Step-by-step explanation:
since your finding retail price u need to do 10×.7 and that would be 7 then and the 7 to 10
 
        
                    
             
        
        
        
Answer: £76.50
Step-by-step explanation:
You find 10% of 85 = 8.5
then you do £85-£8.50 = 76.50
 
        
             
        
        
        
Answer:
$18
Step-by-step explanation:
1. Subtract 5-2 to get three
2. Divide 27 by three to get 9. Now you know how many $ is in one sectio
3. Multiply 9 by 2
4. Riley got $18