A car depreciates at a rate of 15% of its value annually. Carl purchased a new car for $25,000 and wants to know how many years it will take until the car is worth a specific amount. a) Formulate a logarithmic function that would find the number of years t it will take for the car to be worth x dollars.

Then

b) How many years will Carl have until the new car is worth about $5000?