the nurse is asked to regulate the flow rate of an intravenous (iv) solution being administered to a client. the iv bag contains 50 ml of solution, and the solution is to be administered over 30 minutes. the administration set has a drop factor of 10 drops (gtts)/ml. the nurse would regulate the roller clamp on the infusion set to deliver how many drops per minute? fill in the blank. round answer to the nearest whole number.