1. What amount of total liabilities does Apple report for each of the fiscal years ended (a) September 29, 2018, and (b) September 30, 2017?2. What amount of total assets does it report for each of the fiscal years ended (a) September 29, 2018, and (b) September 30, 2017?3. Compute its debt ratio for each of the fiscal years ended (a) September 29, 2018, and (b) September 30, 2017.4. In which fiscal year did it employ more financial leverage: September 29, 2018, or September 30, 2017?