(a)
To plot: the data points and the model in the same viewing window.
(a)

Explanation of Solution
Given information:
The ordered pairs below give the intensities
A mode that approximates the data is
Calculation:
Use a graphing utility to plot the data points and the model in the same viewing window:
(b)
To approximate: the light intensity 25 centimeters from the light source.
(b)

Answer to Problem 72E
The model to approximate 0.274128 microwatts per square centimeters is the light intensity 25 centimeters from the light source.
Explanation of Solution
Calculation:
Use the model to approximate the light intensity 25 centimeters from the light source and substitute the value
Thus, use the model to approximate 0.274128 microwatts per square centimeters is the light intensity 25 centimeters from the light source.
Chapter 1 Solutions
EBK PRECALCULUS W/LIMITS
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