South Company reports the following information on its 2022 income statement: Required (you must show work and clearly label answers as discussed in class): 1. Calculate the breakeven point in units (round to nearest unit). 2. Calculate net income if sales decreased by 10% and variable costs increased by $1 per unit. 3. Refer to the original information. Calculate the company's operating leverage (round to nearest tenth). 4. Use the operating leverage formula to calculate the net income or loss for North Company if there was a 30% increase in sales