Assume the average cost of computer equipment fell 21.6 percent between 2016 and 2017 . Let's see whether these changes are reflected in the income statement of Computer Tycoon Inc. for the year ended December 31, 2017. Required: 1-a. Conduct a horizontal analysis by calculating the year-over-year changes in each line item, expressed in dollars and in percentages. (Round your "Percentage" to 1 decimal place. Any decrease in amounts should be indicated with minus sign) 1-a. Conduct a horizontal analysis by calculating the year-over-year changes in each line item, expressed in dollars and in percentages. (Round your "Percentage" to 1 decimal place. Any decrease in amounts should be indicated with minus sign) 1-b. Not available in Connect. 2-a. Conduct a vertical analysis by expressing each line as a percentage of total revenues. (Round your answers to 1 decimal place. Input all amounts as positive values.) 2-b. Excluding income tax, interest, and selling, general, and administrative expenses, did Computer Tycoon earn more profit per dollar of sales in 2017 compared to 2016 ? No Yes