Mini-Exercise 9-2 (Static) Calculate operating income and net income LO 5 Selling, general, and administrative expenses were $99,000; net sales were $460,000; interest expense was $10,500; research and development expenses were $47,200; net cash provided by operating activities was $118,800; income tax expense was $11,400; cost of goods sold was $247,500. Required: a. Calculate operating income for the period. Operating expenses: b. Calculate net income for the period. Interest expense Income tax expense