Answer:
5.401×10^-1
Step-by-step explanation:
You move the decimal over one to get5.401×10^−1
 
        
             
        
        
        
They are they same amount because 100 and 4 tens and 14 tens are the same
        
             
        
        
        
It is 4.............4.............4
        
                    
             
        
        
        
Answer:
AM = 900
CI = 500 
I have to be honest, this is the most ridiculously worded question of this type that I have ever seen... ask you teacher, why it was so important to force you to solve it using only one variable? 
Step-by-step explanation:
(AM) + (1400-AM) = 1400
2(AM) + 3(1400 - AM) = 3300
2AM + 4200 -3AM = 3300
-AM = -900
AM = 900
CI = 500