Answer:
68
Step-by-step explanation:
12 + 5 = 17
17 x 4 = 68
Andrea's monthly allowance is $68.
 
        
                    
             
        
        
        
Answer: Person A generates 107.6 millions and person B generates 85.3 millions.
Step-by-step explanation:
Let 'x' millions be the amount generated by person A then the amount generated by person B be 'x-22.3' millions.
Since they both earn together $192.9 millions.
So according to the our assumptions we have, 

Therefore, the amount generated by person A=107.6 millions
And the amount generated by person B= 192.9 millions - 107.6 millions
=85.3 millions
 
        
             
        
        
        
Answer:
-1/2
Step-by-step explanation: 
just flip the M
 
        
                    
             
        
        
        
So if there is 7 people and shakes the hand of everyone once it would be  6 shakes for one person to shake all the 7 people.6 because himself is counted as one.
So if we multiply 6x7 we would have our answer which in this case is 42 
42 handshakes in total from everybody.