ped [The following information applies to the questions displayed below.) Data for Hermann Corporation are shown below. Selling price Variable expenses Contribution margin Percent Per Unit of Sales $ 90 63 100% 70 $27 30% Fixed expenses are $30,000 per month and the company is selling 2.000 units per month. Book Him eferences Exercise 6-5 Part 1 Required: 4 1-a. How much will net operating income increase (decrease) per month if the monthly advertising budget increases by $5,000 and monthly sales increase by $9,000? 1-b. Should the advertising budget be increased? Churc