Answer:
$20,000=4x
Step-by-step explanation:
First if we want to find out how much the price of the car went down we would have to find out how much the price went down by subtracting $20,000 by $8,000. I got 12,000. Then we have to find out how much the price went down every year. So, $12,000 รท 4 = $3,000. So, in 4 years the price went down $3,000 dollars every year