6 The following information is available for a company: Year 1 Year 2 Year 3 Year 4 Sales/production (units) 134,400 142,600 151,200 150,200 oints Total costs (f) 271,800 289,944 313,980 319,700 Cost inflation index 100 107 115 120 Required: 1. Determine a linear function for total costs per annum (at Year 1 prices) from the above data, using the high-low method. (Do not round variable cost element in the intermediate calculations. Round the first coefficient to 3 decimal places and the second coefficient the to nearest whole number.) X Answer is complete but not entirely correct. Total cost equation (at Year 1 prices): TC E 0.070 E X X = = 263,7364. Selling prices in Year 5 are expected to be 15% higher than those in Year 1. when total sales revenue was 319,839. Draw a protvolume chart for Year 5, showing sales up to 180,000 units per annum. {Do not round your intermediate calculations. Round your answers to the nearest whole pound.)