Calculating average cost A firm has calculated that its total costs (fixed + variable costs) at different levels of daily output are as follows: Output per day Total cost ($) Average cost ($) 0 10.00 1 15.00 2 18.00 3 20.00 4 21.00 5 23.00 6 26.00 7 30.00 8 35.00 9 41.00 Questions 1 Copy the table. Using the data given, calculate the average cost of production for a firm at different output levels, and complete the final column for each level. 2 At what point does average cost start to rise? 3 Explain why average cost starts to rise at this point