How much will net operating income increase (decrease) per month if the monthly advertising budget increases by $9,300, the monthly sales volume increases by 100 units, and the total monthly sales increase by $14.000?

1-b. Should the advertising budget be increased?

! Required information [The following information applies to the questions displayed below.] Data for Hermann Corporation are shown below: Per Unit $ 140 91 Percent of Sales Selling price Variable expenses Contribution margin Fixed expenses are $88,000 per month and the company is selling 3,000 units per month. $49 100% 65 35%