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The average annual expenditures for a country's consumer on dairy products can be approximated by the function g(x) = 310.4 + 40.5 In x, where x =6 co to 2006. (a) Estimate the average expenditures for 2009 and 2014. (b) Assuming that the model remains accurate, what is the first full year in which expenditures on dairy products exceed $432? (a) To find the average expenditure in 2009, substitute for x in the function. (Simplify your answer.)