Consumption of Dairy Products   A country's per capita consumption of cottage cheese and mozzarella in 1983 and 2013 was as follows.   1983 2013 Cottage Cheese (pounds) 4.2 1.2 Mozzarella (pounds) 3.6 10.8 Thinking of this table as a (labeled) 2 ✕ 2 matrix P, compute the matrix product P   −1   1. P   −1   1  =                −1   1      =

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