Tesla Inc. reported the following financial data for the fiscal year:
•Revenue: $20 billion
•Cost of Goods Sold (COGS): $12 billion
•Operating Expenses: $5 billion
•Depreciation Expense: $1 billion
•Interest Expense: $500 million
•Taxes: $2 billion
•Average Total Assets: $50 billion
•Average Shareholders' Equity: $25 billion
Calculate and interpret the following financial ratios for Tesla Inc.:
•Gross Profit Margin
•Operating Profit Margin
•Return on Assets (ROA)
•Return on Equity (ROE)