The slope-intercept is most usefull
        
             
        
        
        
Answer:  41 or 85
<u>Step-by-step explanation:</u>
Range is the difference between the largest number and the smallest number. 
The largest number is 72.  72 - 31 = 41
The smallest number is 54.  54 + 31 = 85
Adding either ONE of those numbers will result in a range of 31.
 
        
             
        
        
        
Answer: A: the possible income from producing an additional item.
Step-by-step explanation: The actual definition of marginal cost is the cost added by producing one additional unit of a product of service.
 
        
                    
             
        
        
        
4x^2 +20x +25
(2x+5)(2x+5)
        
             
        
        
        
yes because its the square root. hope it helps