Answer:
-2
Step-by-step explanation:
 
        
             
        
        
        
N.O = 4
N is midpoint of M.0
Meaning M.N also has to be 4 
4+4= 8
N.P = 6
0.P = 2 
8+ 2 = 10 
        
             
        
        
        
You’ll distribute the 7 from (x-4) so your equation will be 
28-x>_ 7x-28 
then you’ll combine like terms (-x and 7x and 28 and -28 
-56>_ -8x 
divide by -8 on both sides and flip your sign 
you’re answer is x<_7
x is less then or equal to 7
        
             
        
        
        
-7 - 3x = 9x(x + 2)
Standard Form:
-9x^2 - 21x - 7 = 0