I can't figure out a factor for this but graphing it shows x = -2 and +1 as real roots.
        
             
        
        
        
76.25 is the answer because 1525 divided by 20 equals 76.25
        
             
        
        
        
The value of the expression would decrease because if you add more to the smallest number in the subtraction problem the value or the answer decreases