Please help I’m on a quiz and need to get this right i will rate five stars and Offer lots of points please make sure it is correct

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

What is the answer to the question 5x+2x

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?