Complete the function table. input (n) 4 3 9 output (n-1)

For this case we have the following function:
 
 We evaluate the function for each value of n.
 We have then:

 For n = 4:
 

 For n = 3:
 

 For n = 9:
 

 Then, the table of values is given by:

 Input (n)      Output (n-1)
    4                       3
    3                       2
    9                       8

Idon't know the answer