Please answer the questions listed for amazon: What is the Z-score for your company in the current and prior years?

Please answer the questions listed for amazon:

1. What is the Z-score for your company in the current and prior years? Explain any yearly differences and whether this indicates stronger or weaker solvency.
2. Calculate the debt/equity ratio for your company in the current and prior years. Explain any yearly differences and whether this indicates more or less financial risk.
3. Calculate the times-interest earned ratio for your company in the current and prior years. Explain any yearly differences and whether this indicates more or less financial risk.
4. Please go to the notes to your financial statements. Does your company have any contingencies and/or any financial instruments with off-balance sheet risk?