Brown Corporation has sales of 1750 units at $40 per unit. Variable expenses are 30% of the selling price. If total fixed expenses are $39,000, the degree of operating leverage is: 4.90 7.00 2.27 2.10 A cement manufacturer has supplied the following data: Tons ement produced and sold Sale nue Variable manufacturing expense Fixed manufacturing expense Variable selling and administrative expense Fixed selling and administrative expense Net operating income 257,000 $1,079,400 $426,000 $285,000 $88,000 $225,000 $55,400 What is the company's unit contribution margin? (Do not round your intermediate calculations.) O $2.20 per unit O $2.00 per unit O $4.20 per unit O $0.22 per unit