a firm sells its output for $20 per unit and has atotal cost function TC=16+17Q-9Q2+Q3. (a)state the firms fixed costs. (b)determine the firm's...

a firm sells its output for $20 per unit and has atotal cost function TC=16+17Q-9Q2+Q3. (a)state the firms fixed costs. (b)determine the firm's marginal cost function.(c)determine the firm's average cost function.(d)determine the firm's total profit function.(e)determine the profit elasticity at an output rate of 8 units