Sales (12, 800 units × $30 per unit) Variable expenses Contribution margin Fixed expenses $ 384,000 230,400 153,600 171,600 $ (18,000) Net operating loss Required: 1. Compute the company's CM ratio and its break-even point in unit sales and dollar sales. 2. The president believes that a $6,600 increase in the monthly advertising budget, combined with an intensified effort by the sales staff, will increase unit sales and the total sales by $80,000 per month. If the president is right, what will be the increase (decrease) in the company's monthly net operating income? 3. Refer to the original data. The sales manager is convinced that a 10% reduction in the selling price, combined with an increase of $32,000 in the monthly advertising budget, will double unit sales. If the sales manager is right, what will be the revised net operating income (loss)?

Please also do parts 4 and 5 while showing work so that way I can understand better. Thank you.

solve all of them. I mentioned in my question to solve all the parts

I really need help with this item below. I have tried a few different ways to do this problem, but the top box keeps coming back as incorrect. I know that the amounts are correct, but the first box is wrong for some reason. Please read the feedback boxes and include the appropriate formulas and cell references for this item. This is done through Excel. PLEASE HELP!!!!!! Note that the pictures are the same exact problem, but I used two separate formulas to try and solve this problem.