A new car worth %24,000 is depreciating in value byy $3,000 per year.

a. write a formula that models the car's value, y dollars, after x dollars.

b. use the formula from part (a) to determine after how many years the car's value will be $15,000.

c. Graph the formula from part (a) in the first quadrant of a rectangular coordinate system. Then show your solution to part (b) on the graph.