The numbers of prescriptions P (in thousands) filled at two pharmacies from 2012 through 2016 are shown

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The numbers of prescriptions P (in thousands) filled at two pharmacies from 2012 through 2016 are shown in the table.
Year Pharmacy A Pharmacy B 2012 19.2 20.4 2013 19.6 20.8 21.1 2014 20.0 2015 20.6 21.5 2016 21.3 22.0

(a) Use a graphing utility to create a scatter plot of the data for pharmacy A and find a linear model. Let t represent the year, with t = 12 corresponding to 2012. Repeat the procedure for pharmacy B.
(b) Assume that the models in part (a) can be used to represent future years. Will the number of prescriptions filled at pharmacy A ever exceed the number of prescriptions filled at pharmacy B? If so, when?

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