This is my code and I really have no clue what to do:

def list_function(x):

n[1] = n[1] + 3

return n[1]

n = [3, 5, 7]

print list_function(n)

And this is the error message it gives:

Oops, try again.

list_function([6, 5]) returned 11 instead of [6, 8]