The average price of a gallon of gas in 2015 dropped $0.94 (28 percent) from $3.34 in 2014 (to $2.40 in 2015). Required: 1. Conduct a horizontal analysis by calculating the year-over-year changes in each line item, expressed in dollars and in percentages for the income statement of Insignia Corporation for the year ended December 31, 2015 (amounts in billions). 2-a. Conduct a vertical analysis by expressing each line as a percentage of total revenues. 2-b. Excluding income tax and other operating costs, did Insignia earn more profit per dollar of revenue in 2015 compared to 2014? Complete this question by entering your answers in the tabs below. Req 1 Req ZA Req 2B Conduct a vertical analysis by expressing each line as a percentage of total revenues. (Round percentage values to 1 decimal place.) INSIGNIA CORPORATION Income Statements (amounts in billions) For the Year Ended December 311 2015 2014 Revenues $ 126 100.0 % $ 252 % Cost of Crude Oil and Products 63 % 145 % Other Operating Costs 59 % 53 % Income before Income Tax Expense 4 % 54 % Income Tax Expense % 41 % Net Income $ 4 % $ 13 %