Year 2011 2012 2013 2014 2015 Number of federal credit unions 4432 4260 4100 3925 3760 Find a linear model for these data with x=11 correspoding to the year 2011 a) The linear model for these data is y=(   )x+(   ) b) assuming the trend continues, estimate the number of federal credit unions in the year 2018

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