- What input or parameter value impacts the number of times the recursive function will be called. - Give three specific examples of input/parameter values and, for each, state the number of times the recursive function will be called. - Devise a formula with respect to n that describes the number of times the recursive function will be called, where n is either the value passed or some property of the value passed (e.g. n might be the length of a string of the size of an array)