Answer:
The answer is  
20x + 17.5
Step-by-step explanation:
Multiply the 5 by the numbers inside the parenthesis. 
5 x 4x
5 x 3.5
 
        
             
        
        
        
The domain is the value of x. In this case, -3≤x≤7
the range is the value of y. in this case, -1≤y≤9
this is not a function, because the same x value has two corresponding y values. For example, when x=5, y=0 or y=8
It IS a function if every x value has only one corresponding y value. 
        
             
        
        
        
Here’s the correct answer and how I got the answer :)
 
        
                    
             
        
        
        
(2, -1), (6,- 4), and (6, -1). Hope this helps man!