
To find: The equation for the curve that best fits the data.

Answer to Problem 8E
The equation for the curve that best fits the data is
Explanation of Solution
Given information:
The giventable is shown in figure (1).
Figure (1)
Calculation:
The graph is obtained by using
Press
Press
In the display screen, Press enter to get the linear equation as shown in the display below.
Therefore, the model could be expressed with an exponential function of the form as.
The exponential model is.
Now, press
Press
Press
In display screen, press enter to get the quadratic equation as shown in the display.
Therefore, the model could be expressed with a quadratic function.
The quadratic model is.
Now, press
Press
Press
In display screen, press enter to get the quadratic equation as shown in the display.
Therefore, the model could be expressed with a cubic of the form as shown.
The cubic model is.
Now, press
Press
From the above graph, quadratic equation suits the model well because the graph is closed to the data. Hence, the equation of the curve for best fit is.
Therefore,the equation for the curve that best fits the data is
Chapter 6 Solutions
Algebra 2
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