Seth tracks the average number of a plant species found in a forest area. He uses volunteers to help search for the species. The number n of plants found increases by r percent for each volunteer added to the search. Seth found l plants before adding any volunteers.

Part A
Write an exponential growth function that relates the number n of plants found to the number x of volunteers Seth has.

Part B
An appropriate domain of the function is x ≥ 0, where the x-values are:
Choose from one of the following-
Rational Numbers
Whole Numbers
Real Numbers

Explain why you chose that