please answer the question as instructed in the pics , including calculation, thank you!

Question 1 (20 marks) Orange is the accountant for Super Services Ltd. He has been asked by senior management to provide an estimate of electricity cost using high low method. Orange has identified oven hours as the most suitable cost driver. The following costs were incurred during the previous 5 months. Month Oven Hours Electricity Cost January 80 000 40 000 February March May 50 000 41 000 REQUIRED: 1. Use the high low method to estimate the company's electricity cost behaviour and express it in an equation form? (10 marks) 2. Predict the utilities cost for a month in which 65 000 oven hours are used? (5 marks) 3. Some businesses use only approximations when estimating cost functions. What are some possible reasons for this