Answer:  The required value of y is 19. 
Step-by-step explanation:  We are given to find the value of y in the solution to the following system of equations :

Comparing equations (i) and (ii), we get

From equation (i), we get

Thus, the required value of y is 19. 
 
        
                    
             
        
        
        
it is under mapping and function
f of x is equal to -2 root x-7 plus one
 
        
             
        
        
        
The smallest number of pens he can buy is 4 packages
        
             
        
        
        
Answer:
1/2
Step-by-step explanation:
simply divide 3/10 to get 0.3 and then divide 3/5 to get 0.6 then just divide 0.3 to 0.6 to get 0.5 or 1/2