Exercise 5-5 Changes in Variable Costs, Fixed Costs, Seling Price, and Volume LO5-4 The following information applies to the questions displayed belowj Data for Hermann Corporation are shown below Percent of Sales 100% 60% Per Unit S 65 Selling price ariable expenses 39 Contribution margin S 26 40% Fixed expenses are $73,000 per month and the company is selling 4,300 units per month. References Section Break Exercise 5-5 Changes in Variable Costs, Fixed Costs, Selling Price, and Volume [LO5-4) value: 3.00 points Exercise 5-5 Part 1 Required 1-a. The marketing manager argues that a $9,700 increase in the monthly advertising budget would increase monthly sales by $23,500. Calculate the increase or decrease in net operating income