The Following Selected Amounts Were Extracted from the Financial Statements

The following selected amounts were extracted from the financial statements of Alfonso Corporation.

a.Prepare a trend analysis for net sales,gross margin,and net income using Year 1 as the base year.
b.For net sales,gross margin,and net income:
1.Calculate the percentage change from Year 1 to Year 2.
2.Calculate the percentage change from Year 2 to Year 3.
c.For each of the four years,compute the percentage relationship of gross margin to net sales and the relationship of net income to net sales.
d.Identify which requirement(s)above involve(s):
1.Horizontal analysis
2.Vertical analysis
Round all answers to the nearest tenth of 1 percent.