Data for Hermann Corporation are shown below: Percent of Selling price Per Unit $110 Sales 100% Variable expenses 77 70 Contribution margin $ 33 30% Fixed expenses are $82,000 per month and the company is selling 3,500 units per month. Exercise 5-5 (Algo) Part 1 Required: 1-a. How much will net operating income increase (decrease) per month if the monthly advertising budget increases by $8,700 and monthly sales volume increases by 100 units? 1-b. Should the advertising budget be increased? Complete this question by entering your answers in the tabs below. Req 1A Req 1B (Do not round intermediate calculations.) Net operating income by