9. Pharmacy Sales The rate of sales (in billions of dollars per year) in pharmacies and drugstores can be approximated by 2. f(x) = 42 In(x) + 124 (x 2 1 ), 3. where x = I corresponds to the year 2001. Find the function F(x) that gives total sales between the year 2001 and year x. ( Hint: F(1) = 0 because we are counting only total sales since 5. 2001.) (Data from: Annual Retail Trade Survey.) 6