Question: The table below gives U.S. coal consumption for selected years. (a) Draw a scatterplot, letting t = 0 represent 1950. (b) Use the quadratic regression

The table below gives U.S. coal consumption for selected years. Year 1950 1960 1970 1980 1990 2000 2010 2018 Millions of Short

(a) Draw a scatterplot, letting t = 0 represent 1950.
(b) Use the quadratic regression feature of a graphing calculator to get a quadratic function that approximates the data.
(c) Graph the function from part (b) on the same window as the scatterplot.
(d) Use cubic regression to get a cubic function that approximates the data.
(e) Graph the cubic from part (d) on the same window as the scatterplot.

Year 1950 1960 1970 1980 1990 2000 2010 2018 Millions of Short Tons 494.1 398.1 523.2 702.7 904.5 1084.1 1048.5 687.3

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