Data for Hermann Corporation are shown below: Selling price Variable expenses Contribution margin Per Unit $ 115 69 $ 46 Percent of Sales 100% 60 40% Fixed expenses are $83,000 per month and the company is selling 2,500 units per month. How much will net operating income increase (decrease) per month if the monthly advertising budget increases by $8,800 and monthly sales increase by $17,250? (Round any unit calculations up to the nearest whole unit.) Net operating income by 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 $5 per unit and increase unit sales by 15%. Net operating income by