The expression of the height is

the index "n" is the numbers of times that the ball is down, to n=1 the height is 8 inches, to n=2 the height is 4 inches. 
An when n=5, the height is

the anwers is 0.5 inches
 
        
        
        
Answer:
27
Step-by-step explanation:
2, 7, 12, 17, 22, 27
 
        
             
        
        
        
96+264 = 360
360 \ 24 = 15
Therefore he received 15 boxes