The ordered pairs below give the intensities y (in microwatts per square centimeter) of the light measured by a light probe located x centimeters from a light source. (Spreadsheet at LarsonPrecalculus.com)
(30, 0.1881)
(34, 0.1543)
(38, 0.1172)
(42, 0.0998)
(46, 0.0775)
(50, 0.0645)
A model that approximates the data is y = 171.33/x2.
(a) Use a graphing utility to plot the data points and the model in the same viewing window.
(b) Use the model to approximate the light intensity 25centimeters from the light source.