Please help me case 2 questions :'( Thank you

20. sinclair company's single product has a selling price of $25 per unit. last year the company reported a profit of $20,000 and variable expenses totaling $180,000. the product has a 40% contribution margin ratio. because of competition, sinclair company will be forced in the current year to reduce its selling price by $2 per unit. how many units must be sold in the current year to earn the same profit as was earned last year? a. 15,000 units b. 12,000 units c. 16,500 units d. 12,960 units

Outstanding stock consists of 8,300 shares of cumulative 7% preferred stock with a $10 par value and 4,300 shares of common stock with a $1 par value. during the first three years of operation, the corporation declared and paid the following total cash dividends. year dividend declared 2016 $ 0 2017 $ 7,300 2018 $ 45,000 the amount of dividends paid to preferred and common shareholders in 2018 is:

Which of the following is not a characteristic of enterprise applications that cause challenges in implementation? a. they introduce "switching costs," making the firm dependent on the vendor. b. they cause integration difficulties as every vendor uses different data and processes. c. they are complex and time consuming to implement. d. they support "best practices" for each business process and function. e. they require sweeping changes to business processes to work with the software.