Just say in the store hahaha bfebfefbevfwvtvt2vt2vt3v3t3bt3btt3tbt2b
        
             
        
        
        
6/11=x/33 is not a proportion because they aren't equal to each other.
 
        
             
        
        
        
The answer is:  " 100 cultures " .
_______________________________________________ 
   Take the number of the day we are at (from the beginning;  in this case, "9" (for "Day 9"). 
_________________________________________________
 Then add "1" to that number (in this case, " 9 + 1 = 10" .
_________________________________________________
Then, take that value (in this case, "10"); and "square" that value ; (in this case;  " 10² = 10 * 10 = 100 .   This is the answer.
__________________________________________________
The answer is:  " 100 cultures " .
__________________________________________________
<u>Note</u><u>:</u>  We get this steps by noticing the trend from the information provided.
___________________________________________________