Cost Analysis The following information is available for the Foster Co. Product Selling Price: $75 Variable Cost Per Unit: $32 Monthly Fixed Costs: $205,000 Tax Rate: 30% Required: 1. Calculate the contribution margin. 2. Calculate the contribution margin ratio. 3. Calculate the break-even point in units. 4. Calculate the break-even point in dollars. 5. Calculate the sales in units required to produce an after tax income of $20,000. 6. Calculate the sales in dollars required to produce an after tax income of $20,000. 7. Calculate the margin of safety if the expected sales for the month are $500,000. * I keep getting stuck especially on questions 5-7. I was hoping to get step by step examples at least for those last three. Any help would be appreciated, i just want to double check my work as well