Please help this is probability

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

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

Solve the system of equations. y= 2x y= x^2 - 15