Chapter 5 Polynomials and Polynomial Functions - 5.9 Write Polynomial Functions and Models - Guided Practice for Example 4 - Page 396: 6

$y=-4.69444x^3+50.0238x^2-132.71x+97$

We enter the data into a graphing calculator and make a scatter plot. The points indicate a cubic model. We use the cubic regression to obtain the model: $$y=-4.69444x^3+50.0238x^2-132.71x+97.$$ We check the model by graphing it in the same viewing window as the data.