I can't seem to get these right. Could someone please do them and explain what I'm doing wrong? Thanks

Brief Exercise 5-5 Blossom Corp. has collected the following data concerning its maintenance costs for the past 6 months. Total Cost July August September October November Units Produced 18,020 32,032 36,036 22,022 40,040 38,038 $41,545 48,048 55,055 42,358 74,575 62,062 December x Your answer is incorrect. Try again. Compute the variable cost per unit using the high-low method. (Round answer to 2 decimal places, e.g. 2.25.) Variable cost per unit 1.75 x Your answer is incorrect. Try again. Compute the fixed cost elements using the high-low method. Fixed costs E 4502