3. A pharmaceutical company.r produces 321500 of an injecta ble diabetes medication per year. It costs $4.35 to store each dose, and $6,3 to produce each batch. Find the number of batches that should be produced annually. 4. At a certain online printing service, the cost 3! [in dollars} of purchasing x business cards (in thousands} can be approximated by I}? + y = 903:. Use implicit differentiation to find and interpret % when x = 1 and y = 45. of]: _ dx _ Interpretation: 5. Find the second derivative ofthe function f(x] = [2x + 1:34, and then findf"(0) and f"{3] . Round your results to two decimal places. f"(x} = NO) = f"(3} =