helpppp please with these 3 short problems ://

SBD Phone Company sells its waterproof phone case for $90 per unit. Fixed costs total $162,000, and variable costs are $36 per unit. Compute the units of product that must be sold to earn pretax income of $200,000 Units to be sold to achieve targeted Income Choose Denominator: Choose Numerator: = Units to achieve target Units to achieve target Zhao Co. has fixed costs of $354,000. Its single product sells for $175 per unit, and variable costs are $116 per unit. If the company expects sales of 10,000 units, compute its margin of safety in dollars and as a percent of expected sales. Dollars Percent Margin of safety Singh Co. reports a contribution margin of $960,000 and fixed costs of $720,000. (1) Compute the company's degree of operating leverage. (2) If sales increase by 15%, what amount of income will Singh Co. report? Degree of operating leverage Percent change in income Amount of income reported