selling price 110 70 Contribution margin Fixed expenses are $82,000 per month and the company is selling 3,500 units per month. Required: 1-a. The marketing manager argues that a $8,700 increase in the monthly advertising budget would increase monthly sales by $18,500. Calculate the increase or decrease in net operating income. 1-b. Should the advertising budget be increased? Complete this question by entering your answers in the tabs below. Req IA Req 1B marketing manager argues that a $8,700 increase in the monthly advertising budget would increase monthly sales by $18,500. Calculate the increase or decrease in net operating income. (Do not round intermediate calcu Prev 12 of 6 Next > and Windows selling price 110 70 Contribution margin Fixed expenses are $82,000 per month and the company is selling 3,500 units per month. Required: 1-a. The marketing manager argues that a $8,700 increase in the monthly advertising budget would increase monthly sales by $18,500. Calculate the increase or decrease in net operating income. 1-b. Should the advertising budget be increased? Complete this question by entering your answers in the tabs below. Req IA Req 1B marketing manager argues that a $8,700 increase in the monthly advertising budget would increase monthly sales by $18,500. Calculate the increase or decrease in net operating income. (Do not round intermediate calcu Prev 12 of 6 Next > and Windows