tesla 10-k 2020 have all the information needed for calculation and charts.

Using the SEC Financial Statements Ratios and Calculations, prepare a ratio analysis of your SEC corporations current and prior years financial statements. In addition to presenting the year to year profit and loss and balance sheet variances, calculate inventory turnover, operating margin, working capital and operating margin. Explain the value of understanding why inventory balances, inventory turnover, cost of goods sold, operating margin, and working capital are important metrics for Cost Accounting.