sales $ 675,000 $ 450,000 $ 225,000 variable expenses 405,000 315,000 90,000 contribution margin 270,000 135,000 135,000 traceable fixed expenses 132,000 66,000 66,000 segment margin 138,000 $ 69,000 $ 69,000 common fixed expenses 58,000 net operating income $ 80,000 required: 1. compute the companywide break-even point in dollar sales. 2. compute the break-even point in dollar sales for the north region. 3. compute the break-even point in dollar sales for the south region.