Kindly advise and give any calculations demonstration required , thank you for assistance

3. (a) Using well illustrated diagrams explain the costs incurred by a firm in the short run. (b) Using the data given in the table below: Output/week kgs 0 1 2 3 4 5 7 8 9 Total cost/week 12 27 $40 51 60 70 80 91 104 120 Kshs 4 9 20 30.5. (i) What is the firm's TFC? ii Calculate the marginal and average costs at each level of output. (iii) Present a sketch of the graph of totals marginal and average cost using figures in (ii) above. TC , MC AC . iv) Comment on the relationship between AC and MC