Data for Hermann Corporation are shown below: Fixed expenses are $82,000 per month and the company is selling 3,500 units per month. equired: a. How much will net operating income increase (decrease) per month if the monthly advertising budget increases by $8,700 and honthly sales increase by $19,800? b. Should the advertising budget be increased? Complete this question by entering your answers in the tabs below. How much will net operating income increase (decrease) per month if the monthly advertising budget increases by $8,700 and monthly sales increase by $19,800 ? (Round any unit calculations up to the nearest whole unit.) Should the advertising budget be increased