Price-Supply Equation The number a of bicycle. helmets a retail chain is willing to sell per week at a price of $p is given by x = avp +b- c, ster where a = 76, b = 27, and c = 400. urse Find the instantaneous rate of change of the supply with respect to price when the price is $62. Round to the nearest hundredth (2 decimal places). urces helmets per dollar Blood Pressure and Age A research group developed the following mathematical model relating systolic blood pressure and age: P(x) = a+ bIn(x + 1), where P(x) is pressure, measured in millimeters of mercury, and a is age in years. By examining Guilford County hospital records, they estimate the values for Guilford County to be a = 44 and b = 28. Using this model, estimate the rate of change of pressure with respect to time after 15 years. Round to the nearest hundredth (2 decimal places) millimeters per year