Inland Company has signed a contract that requires them to produce and sell 50,000 units for $5 per unit. A regression model was run using 22 observations to measure total costs as a function of units. It is as follows: Total costs == $120,000 $2 per unit The standard error of the estimate is $10,000. Required: a. Calculate the following assuming certainty: 1. Breakeven in units and dollars Sales quantity needed to obtain an after-tax profit of $21,000. Assume that a 30 percent tax