Answer:
A=m-n-p
Step-by-step explanation:
So solve for a, we have to isolate it on one side, so -a=n+p-m. So a=m-n-p
 
        
                    
             
        
        
        
They would need to by 3 more tickets. 214 divided by 9 = 23 with the remainder of 3. So I divided 217 by 9 = 23. I added 3 to 214 which got a whole answer 23.
I hope I helped.
        
                    
             
        
        
        
This is just like working with money in a bank account 
that's earning 12% interest.
If the population is 422,000 today, and
' n ' is the number of years after today,
then
         Population  =  422,000 (1.12)ⁿ .
        
             
        
        
        
170 
Because you have to add
120 + 50 = 170