Answer: a
Step-by-step explanation: C is in quadrant 1 and quadrant 1 is (+,+)
 
        
             
        
        
        
I believe that through deductive reasoning angle O is 64 degrees. The reason is it's bigger than angle R so that rules out 32 and 16 degrees, but it's not obtuse, so that rules out 128 degrees, thereby leaving you with 64. Hope this helps :)
        
             
        
        
        
C. The total area of the patio. 
If you don't know the area you can't know how many bricks you need. 
        
                    
             
        
        
        
No solution 
The answer is D
        
             
        
        
        
3/5(divided)9/7
3/5x7/9
27/35