Answer:
1.90
Step-by-step explanation:
 
        
             
        
        
        
Answer:
I thi k it will be b or c because the angles
 
        
             
        
        
        
9hours x 60minutes = 540 minutes
(Presuming he actually sat and read the whole time)
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
by the looks of it its saying what the difference was each time