Unemployment Rate The unemployment rate of a certain country shortly after the Great Recession was approximately f(t) = 50+ 301 t² +26 (0 ≤ t ≤ 4) percent in year t, where t = 0 corresponds to the beginning of 2010. How fast was the unemployment rate of the country changing at the beginning of 2013? (Round your answer to two decimal places.) %/year Need Help? Read It

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