The consumer price index (CPI) is calculated by averaging the prices of various items after assigning a weight to each item. The following table gives the consumer price indexes for selected years from 1940 through 2002, reflecting buying patterns of all urban consumers. Find an equation that models these data and use it to predict the consumer price index in 2015. Use the model to predict the consumer price index in 2015. Round your answer to two decimal places.
?
Year
Consumer
Price Index
Year
Consumer
Price Index
1940
1950
1960
1970
14
24.1
29.6
38.8
1980
1990
2000
2002
82.4
130.7
172.2
179.9
?
Source:U.S. Bureau of the Census
?
A. 76.47
B. 129.14
C. 169.33
D. 216.39
E. 326.77
Answer: E
Mathematics
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