Hi expert please help me.

Current Attempt in Progress Ivanhoe Audio produces a high-end AV receiver that sells for $1,300. Total operating expenses for the past 12 months are as follows: Use the high-low method to estimate fixed and variable costs. Estimated fixed cost Estimated variable cost Based on these estimates, calculate the break-even level of sales in units. (Round answer to whole units, e.g. 15. Use contribution margin per unit to calculate the answer.) Calculate the margin of safety for the coming August assuming estimated sales of 174 units. Calculate the margin of safety for the coming August assuming estimated sales of 174 units. Margin of safety 5 Estimate total profit assuming production and sales of 174 units. (Use contribution margin per unit to calculate the answer.)