Keane wants to lease a car worth $30,000 for 36 months at 4.5% interest and then return it. Its residual value will be $20,000. If he doesn't have to make a down payment calculate the monthly cost. Have to show work

Assume a competitive firm faces a market price of $60, a cost curve of c = 0.003q^3 + 25q + 750, and a marginal cost of curve of: mc = 0.009q^2 + 25.the firm's profit maximizing output level (to the nearest tenth) is , and the profit (to the nearest penny) at this output level is $ will cause the market supply to (shift right/shift left). this will continue until the price is equal to the minimum average cost of $