Convert 2/5 to a decimal and you get .4, or 40%. 40% of the band members also sing, so yes, the band has the same number of string instrument players and singers.
        
                    
             
        
        
        
The answer is the "y" value of (2, 3), 
So the answer is (C), y = 3
 
        
             
        
        
        
(I could answer more confidently if I had more context to the question)
I believe the answer to the question is Andre's neighbor pays Andre 10 dollars a week to mow his lawn. 
Hope this helps, if not, comment below please!!
:L