Exercise 6-5 (Algo) Changes in Variable Costs, Fixed Costs, Selling Price, and Volume [LO6-4] [The following Information applies to the questions displayed below.] Data for Hermann Corporation are shown below: Percent Per Unit of Sales Selling price Variable expenses Contribution margin 61 $ 100 100% 61 $ 39 39% Fixed expenses are $80,000 per month and the company is selling 3,700 units per month. Exercise 6-5 (Algo) Part 2 2-a, Refer to the original data. How much will net operating income increase (decrease) per month if the company uses higher-quality components that increase the variable expense by $3 per unit and increase unit sales by 15%. 2-b. Should the higher-quality components be used