Assume that a snowball melts so that its volume decreases at a rate proportional to its surface area. If it takes four hours for the snowball to decrease to half its original volume, how much longer (in hr) will it take for the snowball to melt completely

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