Plz need answers by today

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

What value of x is in the solution set of 4x – 12 s 16 + 8x?

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