I think the answer is 558.04
        
             
        
        
        
Answer:
This is an exponential decay 
Because the base of the exponent is 1/4.4 which is less than 1
Step-by-step explanation:
What is exponential growth? 
when the base of our exponential is bigger than 1, which means those numbers get bigger.
What is exponential decay? 
when the base of our exponential is in between 1 and 0 and those numbers get smaller. 
 
        
             
        
        
        
Four children average is 15.25 so ages must add to 61 
61-12-16=33
11 and 22 go into 33
Youngest is 11
        
             
        
        
        
-6+2 
--------- =
10-10 
-4
---- =
0
m=0
*(the "-----" are supposed to be fractions, sorry if that looks confusing)*
y+2=0(x-10)
y+2=0
-2 -2
y=-2
Your answer would be "y=-2."
        
             
        
        
        
I think it would be just a constant diagonal line like this /