Blood Pressure and Age

A research group developed the following mathematical model relating systolic blood

pressure and age:

P(x) = a + bln(x + 1),

where P(x) is pressure, measured in millimeters of mercury, and x is age in years.

By examining Guilford County hospital records, they estimate the values for Guilford County

to be a 37 and b = 27.

Using this model, estimate the rate of change of pressure with respect to time after 24 years.

Round to the nearest hundredth (2 decimal places).

millimeters per year