Answer:
-3x+1
Step-by-step explanation:
 
        
             
        
        
        
Answer:
What grade of math is this?
Step-by-step explanation:
 
        
             
        
        
        
I think it's 6.80 hope it helped
        
                    
             
        
        
        
It has to do with the number of dimensions you have in the figure. For example, in a square you have 2 dimensions, length and width. Since you have only two you use units^2. In a cube, you have 3 dimensions, length, width and height, which is where you get the units^3. 
        
             
        
        
        
The subtrahend is 9 and the difference is 8 and the minuend is 17