Question 1 The following costs were reported by ABC Company. Period Units produced Costs ($) 12345 680 4 520 600 4 320 800 4 600 840 4 800 720 4 532 a. Use the High-low Method to calculate the fixed costs per month and the variable costs per unit. (5 marks) b. The following costs were observed over several periods in a manufacturing company. Production level (units) Total costs ($) Period 1 8 58 Period 2 7 64 Period 3 9 82 Period 4 9 74 Period 5 11 90 Period 6 10 96 Required Using the Least Square Method of linear regression, determine the: i. variable cost per units and total fixed cost (17 marks) ii. total cost at an estimated production level of 12 units and 14 units. (4 marks) (Total 25 marks)