A vehicle purchased for $20700 depreciates at a constant rate of 16% each year. Its value after t years can be modeled by the equation A=P(0.84) , where P is the original value of the vehicle. Determine the number of years that it takes for the vehicle to depreciate to $12000 Round to the nearest tenth.

Find the final amount of money in an account if $9,500 is deposited at 5.5% interest compounded annually and the money is left for 10 years.