David purchased a used car. The
equation v= -800x + 8000
represents the value of the car(y).
over a period of time in years(x).
Which of the following best
describes this situation?

A The car was purchased for $800.

B The car decreases in value by
$800 per year.

C The car increases in value by
$800 per year.

D. The car will have the same
value after two years,