Plug in 6 for everywhere s is in the equation
r = 9 + 3s
r = 9 + 3(6)
r = 9 + 18
r = 27
27 is the answer!
        
                    
             
        
        
        
3. CAD: 90-64=26°
4. SOP: 180-76=104°
        
                    
             
        
        
        
Try to calculate them in your head and if that doesn't help use a calculator. I hope this helps
        
             
        
        
        
Try photo math it is very helpful
        
             
        
        
        
21 because it is being multiplied