QR is congruent to PS 
So if QR is 17.7 PS is 17.7 
Answer 3.) PS equals 17.7
        
                    
             
        
        
        
Answer:
he started with either 20 or 15 i probably thought about this way to much so this is the best i could come up with
Step-by-step explanation:
 
        
             
        
        
        
Answer:
y>0
all positive real numbers
Step-by-step explanation:
the range is the output values
this will always be greater than 0
Range : y>0
 
        
                    
             
        
        
        
0.523598775598299 lol I believe