The financial statements of Apple are presented in Appendix D. The complete annual report, including the notes to its financial statements, is available at the company’s website.

Instructions
(Round to one decimal place.)
a. What was the percentage change in (1) total revenue (net sales) and in (2) net income from 2014 to 2015 and from 2015 to 2016?
b. What was the company’s gross profit margin rate in 2014, 2015, and 2016?
c. What was the company’s percentage of net income to total revenue in 2014, 2015, and 2016?