Answer please i need help

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? 8,000 + 24x 8,000 − 24x 8,000 + 2x 8,000 − 2x

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Which shows the correct substitution of the values a, b and c from the equation 1=-2x+3x^2+1