Suppose that the following table shows the number of millions of people in the United States who lived below the poverty level for selected years. Find a cubic model that approximately fits the data, using x as the number of years after 1960. Round numerical values in your answer to four decimal places. Depending on the technology you use, your answer may be slightly different than the correct answer shown.
Year
Persons Living Below the
Poverty Level (millions)
1960
87.3
1970
28.4
1975
25.6
1980
43.2
1989
97.6
1990
103.9
1992
100.8
1996
120.4
2000
140.6
2002
138.4
A. 
B. 
C. 
D. 
E. 
Answer: D
Mathematics
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