12. What is a variable cost? Provide two examples of variable costs. 13. What is a semi variable cost? Provide two examples of semi variable costs. 14. Your department purchased $10,000 of supplies on 6/30/20. All of these supplies were used by your department in July 2020. How would the supplies be recorded on the balance sheet and income statement in June 2020 and July 2020? 15. Your department purchased a $50,000 ultrasound machine on August 31, 2020 with cash. You will start depreciating the ultrasound machine in September using the straight-line method ($50,000 over 5 years = $50,000/5 years = $10,000 depreciation expense per year or $833 depreciation expense per month). How would the ultrasound machine be recorded on the balance sheet and income statement in August 2020 and September 2020