Required information Exercise 5-5 (Algo) Changes in Variable Costs, Fixed Costs, Selling Price, and Volume (LO5-4) [The following information applies to the questions displayed below.) Data for Hermann Corporation are shown below: Selling price Per Unit $80 44 Parent OE Sales 1008 55 Variable expenses Contribution margin $36 456 Fixed expenses are $76,000 per month and the company is selling 2,500 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 $8,100, the monthly sales volume increases by 100 units, and the total monthly sales increase by $8,000? 1-b. Should the advertising budget be increased? Complete this question by entering your answers in the tabs below. Red IA Reg 10 How much will not operating income increase (decrease) per month in the monthly advertising budget increases by $8,100.