it is managerial accounting, i need help in solving this home work. please help

Case Applications- Week 1 Tidal Co. produces surfboards and paddleboards. Presented is the monthly information on the production volume and manufacturing costs: Total Manufacturing Total Boards Surfboards Paddleboards Costs produced Produced Produced January-17 37,908 158 68 90 February-17 88,020 284 162 122 March-17 47,318 189 99 90 April-17 47,716 221 81 140 May-17 42,593 225 45 180 June-17 42,512 198 63 135 July-17 40,028 162 72 90 August-17 53,940 253 95 158 September-17 46,839 230 68 162 October-17 49,842 212 99 113 November-17 41,601 176 77 99 December-17 54,392 234 108 126 January-18 48,337 225 81 144 February-18 51,840 243 90 153 March-18 33,885 140 54 95 1. Use the high-low method to develop a cost-estimating equation for total manufacturing costs. 2. Use the chart feature of a spreadsheet to develop a scatter graph of total manufacturing costs and total units produced. Use the graph to identify any unusual observations. 3. Excluding any unusual observations, use the high-low method to develop a cost-estimating equation for total manufacturing costs. Comment on the results, comparing them with the results from Question 1. 1 Harborside Corp. produces swimsuits. Presented is the monthly information for the last 15 months: Total Manufacturing Total Swimsuits Boardshorts Bikinis Costs produced Produced Produced January-16 28,431 118 51 68 February-16 31,945 169 34 135 March-16 35,488 142 74 68 April-16 35,787 166 61 105 May-16 42,175 196 122 75 June-16 31,884 149 47 101 July-16 30,021 122 54 68 August-16 40,455 189 71 118 September-16 35,129 172 51 122 October-16 37,382 159 74 85 November-16 31,201 132 58 74 December-16 40,794 176 81 95 January-17 36,253 169 61 108 February-17 38,880 182 68 115 March-17 25,414 105 41 71 1. Use the high-low method to develop a cost-estimating equation for total manufacturing costs. 2. Use simple regression analysis to develop a cost-estimating equation for total manufacturing costs. A customer has offered to purchase 75 boardshorts for $195 per item. Management has asked 3. Use multiple regression analysis to develop a cost-estimating equation for total manufacturing costs. A customer has offered to purchase 75 boardshorts for $195 per item. Management has asked your 2