5. What is return on investment? In the example given below, What is the monthly and annual ROI with $100,000 initial investment? 6. What is the net profit in this firm's monthly income statement in both dollars and percentage? 7. Define productivity. Did productivity increase in August? Explain 8. Which of these expenses are variable? Fixed? August 2019 August 2020 Net sales $ 80,000 90,000 Expenses Payroll 24,000 COGS 24,000 Rent 8,000 Utilities 2,400 Marketing 12,000 Insurance 1,600 Supplies 1,600 Note 4,000 24,000 27,000 8,000 2,400 12,000 1,600 1,800 4,000 5. What is return on investment? In the example given below, What is the monthly and annual ROI with $100,000 initial investment? 6. What is the net profit in this firm's monthly income statement in both dollars and percentage? 7. Define productivity. Did productivity increase in August? Explain 8. Which of these expenses are variable? Fixed? August 2019 August 2020 Net sales $ 80,000 90,000 Expenses Payroll 24,000 COGS 24,000 Rent 8,000 Utilities 2,400 Marketing 12,000 Insurance 1,600 Supplies 1,600 Note 4,000 24,000 27,000 8,000 2,400 12,000 1,600 1,800 4,000