Each row has two more boxes than the row above. The first row has one box 
The boxes in a row form an arithmetic sequence with the first term, a₁ = 1 and the common difference, d=2.
The n-th term is 

The sum of n terms is

Answer:
The table will have the following:
Row Number:                        1   2   3    4    5    6
Boxes in the row:                  1   3   5    7    9    11
Total boxes in the display:    1   4   9  16  25  36
 
        
        
        
29.26x=339.12
X=11.6
Therefore it wil take her 11.6 months
        
                    
             
        
        
        
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Where is the problem so that I may be able to help you??
        
             
        
        
        
36
Step-by-step explanation:
360/2=180
180/5=36