All else being equal, a $10.00 increase in a product's variable expense per unit accompanied by a $10.00 increase in its selling price per unit will: of Select one: e a decrease the degree of operating leverage. b. have no effect on the contribution margin per unit. c. decrease the break-even volume. d. decrease the total contribution margin. e. None of the given answers, 20 Following are utilities costs for different level of machine hours: $250 for 10 hours: $260 for 12 hours; $270 for 14 hours; $280 for 16 hours. This cost is best described as ut of Select one: a. Fixed b. Variable c. Direct d. Mixed e. None of the answers given