A project has expected sales of 15,000 units, plus or minus 4 percent, variable cost per unit of $120 plus or minus 3 percent, fixed costs of $311,000plus or minus 2 percent, and a sales price per unit of $168 plus or minus 2 percent. The depreciation expense is $74,000 and the tax rate is 35 percent. What is the contribution margin per unit for a sensitivity analysis using a variable cost per unit of $122