I cannot figure out to compute the answer for the question 1? I had no problem answering 2 and 3. Should not the first question be the easiest? LOL Can you please show me how to compute Q1? My answer of .069 is incorrect.I just need the variable cost per tour mile and fixed costs per month. Thank you

Rio Bus Tours has incurred the following bus maintenance costs during the recent tourist season. THE real is Brazil's national monetary unit On the day this exercise was written , the real was equivalent in value to Log US dollar Miles Traveled by Month Tour Buses Cost November 14 , 70 0 18 , 480 real December 17 , 200 18, 190 January 19 , 780 18. 858 February 23 , 80 0 19 , 3 0 0 March 31 , BOB 20 . 508\\ April 13, 30 0 17, 808\\ Required :" 1 . Use the high - low method to estimate the variable cost per four mile traveled and the fixed cost per month. 2 Develop a formula to express the cost behavior exhibited by the company's maintenance cost ." 3. Predict the level of maintenance cost that would be incurred during a month when $ 2.000 four miles are driven Complete this question by entering your answers in the tabs below Required 1 Required 2 Required } Ise the high- low method to estimate the variable cost per four mile traveled and the fixed cost per month .( Round" Variable cost Her four mile" to decimal places ." Variable cost per four mile 10 265/ real Fixed cost per month real