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Research and Development Expense International Business Machines Corporation (IBM) reported the following on its 2018 form 10-K. $ millions 2018 2017 2016 Total revenue $79,591 $79,139 $79,919 Research, development and engineering expense 5,379 5,590 5,726 Number of new patents awarded 9,100 9,043 8,088 Required 3. Calculate IBM's commonsize research, development and engineering expense for each year. What pattern do we observe? Note: Round percentage to one decimal places (for example, enter 6.7% for 6.6555%). 2018 2017 2016 RD&E expense common-size O % x 0 % x 0 % x RD&E Expense relative to sales has decreased v over the years from 2016 to 2018. b. Compute the research, development and engineering expense per new patent for each year. What pattern do we observe? Note: Round percentage to one decimal places (for example, enter 6.7% for 6.6555%). 2018 2017 2016 RD&E per patent as a percentage 0 % x 0 % X 0 % x RD&E spending per patent decreased : V over the years from 2016 to 2018