Given the following cost and activity observations for Levo Enterprises? utilities, use the high-low method to calculate Levo?s variable utilities cost per machine hour. Round your answer to two decimal places. Month Cost Machine Hours September $4,100 22,000 October 3,700 16,000 November 4,000 20,000 December 4,500 25,000 a. $0.09 b. $4.32 e. $0.25 d. $12.50 In a graph of cost-volume-profit analysis, the a. total revenue line typically begins at a required minimum level. b. slope of the total cost line is dependent on the variable cost per unit. c. total cost line normally begins at zero. d. sales level at which total cost and total revenue lines intersect is also equal to fixed costs