Answer:
I have no idea 
Step-by-step explanation:
 
        
             
        
        
        
200 is the answer i know this because 40%of 200 is 80
        
                    
             
        
        
        
2 x -6 equals 0. add 6 to both sides. divide both sides by two. x equals 3
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
2+3=6
135/6=22.5
22.5x2=45
 
        
                    
             
        
        
        
Answer:
The solution in the attached figure
Step-by-step explanation:
we have

we know that
The solution of the inequality is the shaded area below the dashed line of the parabola
The equation of the dashed line is the vertical parabola 
therefore
The solution in the attached figure