b. In 2000, there were 500 rabbits on an island. If the population grows by 4% each year, how many rabbits will there be on the island by the year 2020? c. A car was purchased for $20,000. Each year, the value of the car depreciates by 4% each year. How much will the car be worth in 10 years? d. A scientist is conducting a long term study of a city, since she wants to explore its environmental impact over time. The city's population is increasing by 15% every year, and there are currently 130,000 people. Determine a function, f(t), that can be used to represent the population of the city t years after the study begins. Using the function, determine, to the nearest tenth of a year, how long it will take before the population reaches 200,000 people