Answer:
2.  Undefined 
4. 3/1
Step-by-step explanation:
 
        
             
        
        
        
The sum of angle around a point equal 360° 
so (BOA) = 360-250=110° 
and the sum of angle in the shape CAOB = 360° 
so BCA = 360-(110+90+90)= 70°
THE ANSWER IS C.70°
        
             
        
        
        
727.29 - 248.50 = 478.79
500-478.79 = 21.21
$21.21 is the least amount of money he needs to deposit 
 
        
                    
             
        
        
        
Answer:
21/8 or 2 3/8
Step-by-step explanation:
33/8 - 3/2
33/8 - 12/8=21/8
hope it helps:)