PLEASE HELP!!! 
Acar depreciates at a rate kf 13% per year. the car was originally purchased for 28,000. 
1. what is the decay factor of the car? 
2. Wrtie a function for this situation with the value if the car as a function of the age of the car in years 
3. How much will the car be worth in 6 years? 
4. Rewrite the function for question 2 so it is an equivalent function with a negative exponent.