Hi I need help with question 12-14 please

11217 .III '5' C} i webassignnet 12. [0.25/1 Paints] PREVIOUS ANSWERS TANAPMATHT 9.5.062.NVA ASK YOUR TEACHER PRACTICE ANOTHER The concentration or a certain drug in a patient's bloodstream t hr after injection is given by the following function. 0.2t (2+ 1 (a) Find the rate at which the concentration of the drug is changing with respect to time. 0.2 1.r2 \"it\" (Mr ' C(t) = (b) How fast is the concentration changing 1/2 hr, 1, and 9 hr after the injection? (Round your answers to four decimal places.) after 112 hr S percent/hr after 1 hr C] percent/hr after 9 hr [: percent/hr Need Help? 13. [011 Points] PREVIOUS ANSWERS TANAPMATHT 9.5.072.NVA ASK YOUR TEACHER PRACTICE ANOTHER The unemployment rate of a certain country shortly after the Great Recession was approximately St + 304 22 + 24 percent in year t, where r : 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.) x \"Io/year rm: (usrs4) 14. [0.96/1 Points] PREVIOUS ANSWERS TANAPMATH'I 9.5.082.NVA ASK YOUR TEACHER PRACTICE ANOTHER A developing country's gross domestic product (GDP) from 2005 to 2015 is approximated by the function G(t) = o.2t3 + 2.421 + as o 5 cs 9 where G(t) is measured in billions of dollars, with t = 0 corresponding to 2006. (a) Compute the following values. Gm = G'(2) = 0(3) = [:1 Gm = 'R''' (b) Compute the following values. em = m = 6"(3) = ~/ W: = C] v ms: = E] G'isn = v G"(7) = ~/ (:18) = v (c) Using the results obtained in parts (a) and (b), show that after a slow start, the GDP increases quickly and then slows down. I This answer has nol been graded yel. m