1- Calculate the contribution margin. Show your calculation. 2- Calculate the breakeven point in number of units. Show your calculation. 3- Based on your given and calculations, when does the business start to make profit? 4- List and discuss two limitations of the breakeven analysis. Selling price per unit Fixed expenses Selling & administrative Interest expense Variable expenses Cost of goods sold Selling & administrative $17 $ 130,000 $10,000 $4 $3 JUIERBURQU