z - Chapter 4
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The average annual expenditures for a country's consumer on dairy products can be approximated by the function \( g(x)=36.3+141.1 \ln x \), where \( x=10 \) corresponds to 2010.
(a) Estimate the average expenditures for 2012 and 2018.
(b) Assuming that the model remains accurate, what is the first full year in which expenditures on dairy products exceed \( \$ 485 ? \)
(a) To find the average expenditure in 2012, substitute □ for x in the function.
(Simplify your answer.)
The average expenditure for 2012 was approximately \( \$ \) □ .
(Type an integer or decimal rounded to the nearest hundredth as needed.)
To find the average expenditure in 2018, substitute □ for x in the function.
(Simplify your answer.)
The average expenditure for 2018 was approximately \$ □ .
(Type an integer or decimal rounded to the nearest hundredth as needed.)
(b) The first full year in which expenditures on dairy products exceed \( \$ 485 \) is □ .