For a cost function C = 100 + 10Q + Q2, the average variable cost of producing 20 units of output is
                        
        Note
For a cost function C = 100 + 10Q + Q2, the average variable cost of producing 20 units of output is 30.
For a cost function C = 100 + 10Q + Q2, the average variable cost of producing 20 units of output is 30.