Required information [The following information applies to the questions displayed below.] Oslo Company prepared the following contribution format income statement based on a sales volume of 1,000 units (the relevant range of production is 500 units to 1,500 units): 11. What is the margin of safety in dollars? What is the margin of safety percentage? Required information [The following information applies to the questions displayed below.] Oslo Company prepared the following contribution format income statement based on a sales volume of 1,000 units (the relevant range of production is 500 units to 1,500 units): How many units must be sold to achieve a target profit of $16,800 ? (Round intermediate calculations to 2 decimal places. Required information [The following information applies to the questions displayed below.] Oslo Company prepared the following contribution format income statement based on a sales volume of 1,000 units (the relevant range of production is 500 units to 1,500 units): If the variable cost per unit increases by $1, spending on advertising increases by $1,700, and unit sales increase by 240 its, what would be the net operating income? (Round "Per Unit" calculations to 2 decimal places.)