The revenue (in billions of dollars) generated from a certain item can be approximated by the following function, where x=1 corresponds to the year 1991. g(x) = 5.63 + 8.75 ln(x) (1 ≤ x ≤ 17) Estimate the rate of change of revenue in 2007. The rate of change of revenue in 2007 is ____ billion dollars per year. (Type an integer or decimal rounded to three decimal places as needed.)
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