[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 phe relevant range of production is 500 units to 1,500 units): 3. What is the variable expense ratio? 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 sales increase to 1,001 units, what would be the increase in net operating income? (Round your answer to 2 decimal ploces.) 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). 8. What is the break-even point in unit sales? (Round intermediate calculations to 2 decimal places.)