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: Fixed expenses are $83,000 per month and the company is selling 2,500 units per month. rercise 6-5 (Algo) Part 2 a. Refer to the original data. How much will net operating income increase (decrease) per month if the company uses higher-quality mponents that increase the variable expense by $5 per unit and increase unit sales by 15%. b. Should the higher-quality components be used