The function would be f(x)=11,500-.16xPlug in 4 for x
        
             
        
        
        
Answer:
I think 10
Step-by-step explanation:
 
        
                    
             
        
        
        
The Answer is 3
All you need to do is multiply 7 and 1 then divide. 
 
        
             
        
        
        
This should be your answer
 
        
        
        
Let x = number of long sleeve shirts
Let y = number of short sleeve shirts
x + y = 200
x/2 + y/3 = 80
Now solve this pair of simultaneous equations to find x and y.