Answer:
240
Step-by-step explanation:
 
        
             
        
        
        
The correct answer is m=-2 (slope) and b=4 (y-intercept).
        
             
        
        
        
Vertex angle = x 
1 base angle = 1/2x - 8
180-x = (1/2x-8)x2
180-x = x-16
196-x = x 
196 = 2x
x=98 
If you want explanation please ask me .
        
             
        
        
        
Answer:
x = 9
Step-by-step explanation:
-2x + 3 = -15
-2x = -18
x = 9 
 
        
                    
             
        
        
        
Answer:
22
Step-by-step explanation:
22 IS EXACTLY 50% OF 44 SO IN ORDER FOR HER TO GET 50% OF THE QUESTIONS RIGHT IT MEANS SHE ONLY ANSWERED 22 CORRECTLY