Required information [The following information applies to the questions alsplayed below] Data for Hermann Corporation are shown below: Fixed expenses are $82,000 per month and the company is selung $.500 units per month equired: a. How much will net operating income increase (decrease) per month if the monthly advertising bucget increases by $8,700, the honthly sales volume increases by 100 units, and the totai monthly sales increase by $11,000 ? bhould the advertsing 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, the monthly sales volume increases by 100 units, and the total monthly sales increase by $11,000 ? (Do not round intermediate calculationu.)