Question 2. [Marks: 12.5] a Gross revenue data (in million th.) for Regional Airlines for an 8-year period are as follows: Year 2008 2009 2010 2011 2012 2013 2014 2015 Revenue 24 29 35 36 36 42 47 44 Develop a linear trend equation for this time series. Draw the trend line. Comment on what the equation tells about the gross revenue for Regional Airlines for the 8-year period. Also determine the forecast for gross revenue for the year 2017. b) Time series and forecasting play vital role in business decision making. Explain it