Answer:
The exponential function y to determine the value of the car after x years if the rate of decrease is the same each year is f(y) = y* (1 - 0.25)^x
Explanation:
Selling price of car = $16000
Value of car after one year = $12000
Decrease of value in one year = ($16000 - $12000)/$16000
= 1/4
= 0.25
f(y) = y* (1 - 0.25)^x
Therefore, The exponential function y to determine the value of the car after x years if the rate of decrease is the same each year is f(y) = y* (1 - 0.25)^x