The Following Selected Amounts Were Extracted from the Financial Statements

The following selected amounts were extracted from the financial statements of Missinger Corporation.
$$\begin{array}{l}\begin{array} { l l l l } \end{array}\\\begin{array} { l r r r r } &\text { Year } 4 & \text { Year } 3 & \text { Year } 2 & \text { Year } 1\\\text { Net sales } & \$ 720,000 & \$ 690,000 & \$ 660,000 & \$ 600,000 \\\text { Gross margin } & 464,000 & 448,000 & 436,000 & 400,000 \\\text { Net income } & 113,000 & 111,000 & 108,000 & 100,000\end{array}\end{array}$$
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.
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: