PPlease only answer e! Thank you

Please refer to the following information for the company's first year in business: 600 400 Hard Working Inc. Balance Sheet As of December 31, 2019 ASSETS LIABILITIES AND SHAREHOLDERS EQUITY Current Assets Current Liabilities Cash 1,800 Accounts Payable Accounts Receivable 600 Notes Payable Inventory 400 Total Current Liabilities Investments 1.200 Long Term Debt Total Current Assets 4,000 TOTAL LIABILITIES Capital Expenditures 800 TOTAL ASSETS 4,800 Shareholders Equity Common Stock Note: Working Capital = (A/R + Inv - A/P) 1.000 2.800 3.800 1,000 Select 2020 Income Statement information: Revenue: $9,000 Cost of Goods Sold: $5,500 Sales Expense: $1,800 Depreciation: Net Income: $800 $700 a. What is the free cash flow? b. What is the quick ratio? c. What are the days receivables? d. What is the operating profit margin percentage? e. What is the company's Return on Equity