2. Which of the following statements describes an exponential relationship?
(a) The population of a certain city is increasing at the rate of 600 people per year,
(b) The value of this rental property can be depreciated at the rate of $4300 per year.
(c) The number of dogs is increasing at the rate of 40 dogs per year.
(d) The price of a widget is increasing at the rate of 34% per year.
