Required information [Tie following information applies to the questions displayed belowy] Data for Hermann Corporation are shown below Fixed expenses are 584,000 per month and the company is selling 2.600 units per month. Required; Ai. How much wa net opecating income inciease (decrease) per month it the monthly advertising budget increases by 58.900 , the monthly sales volame increases by 100 units, and the total monthly sales increase by $12,000 ? b. Should the atvertising bathet be increased? Complete this question by entering vear answers in the tabs below: How twuch wil net operating incoine incinase (decrease) per month if the menthly advertiling budget increzses by se, 900