4 K P(x) = 11.3(6+ Inx) 10x 100 Poms: 003 A formula for the relationship between weight and blood pressure in children is given by the formula below where P(x) is measured in millimeters of mercury and x is measured in pounds. Use the formula to answer the questions. What is the rate of change of blood pressure with respect to weight at the 50-pound weight level? mm/pound. The rate of change at the 50-pound weight level is approximately (Do not round until the final answer. Then round to the nearest hundredth as needed.)