a straight horizontal line is 180 degrees
box in the middle means that angle is 90 degrees 
(s+1) + 90 + (2s-1) = 180
3s + 90 = 180 
s = 30
 
        
             
        
        
        
You have to translate the triangle over to where point B is lined up with point B in the second triangle. Then you can reflect over the y-axis.
So...your answer should be...
Step 1:A.
Step 2:C.
        
                    
             
        
        
        
Answer:
c
Step-by-step explanation:
i am not sure i but i think it is
 
        
             
        
        
        
Let x be the percent of p asked 
then 
m% of n = x% of p 
m/100*n = x/100*p 
mn = xp 
x = mn/p