Question

a new car worth $28,000 is depreciating in value by $4,000 per year. after how many years will the cars value be $12,000?

Explanation:

Step1: Find the total depreciation amount

The initial value of the car is $28000$ and the final value is $12000$. So the total depreciation amount is $28000 - 12000=16000$.

Step2: Calculate the number of years

The car depreciates by $4000$ per year. Let the number of years be $n$. We know that the total depreciation amount is equal to the depreciation - rate per year times the number of years. So $n=\frac{16000}{4000}$.
$n = 4$

Answer:

4