7. Dennis corp has a sales price = $34/unit. The VC percentage = 60%. The current after-tax net income = $159,936. What is the margin of safety in. 7. Dennis corp has a sales price = $34/unit. The VC percentage = 60%. The current after-tax net income = $159,936. What is the margin of safety in units? (Tax rate = 30%)Units__________?