BR Company has a contribution margin of 18%. Sales are $423,000, net operating income is $76,140, and average operating assets are $131,000. What is the company's return on investment (ROI)

In the market for widgets, the supply curve is the typical upward-sloping straight line, and the demand curve is the typical downward-sloping straight line. the equilibrium quantity in the market for widgets is 250 per month when there is no tax. then a tax of $6 per widget is imposed. as a result, the government is able to raise $750 per month in tax revenue. we can conclude that the after-tax quantity of widgets has fallen by a. 25 per month. b. 50 per month. c. 75 per month. d. 100 per month.