Really need help practising for Exams.

The Lakeshore Hotel's guest-days of occupancy and custodial supplies expense over the last seven months were: Guest-days of Custodial Month occupancy supplies expense March 4,100 E 6,485 April 6,700 8,520 May 8,200 9,870 June 10,800 12,180 July 12,300 13,455 August 9,200 10,600 September 7,700 9,545 Guest-days is a measure of the overall activity at the hotel. For example, a guest stay at the hotel lasting for three days is counted as three guest-days Required: 1. The data above should be plotted on a scattergraph and a line of best fit, or a regression line, fitted over the data by visual inspection. The version below represents the above data graphically. Use this for the remaining parts of this question. 2. What is the approximate monthly fixed cost as per the scattergraph? (Round your answer to the nearest whole pound.) What is the approximate variable cost per guest-day as per the scattergraph? (Round fixed cost element to the nearest whole pound in the intermediate calculations. Round your answer to 2 decimal places.) Approximate variable cost per guest-day 3. Scrutinize the points on the graph and explain why the high-low method would or would not yield an accurate cost formula in this situation