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, with x representing years past 1900. Find an equation that models these data. If it's necessary, round your calculations to four decimal places. 
Source: U.S. Bureau of the Census
Definitions:
Normal Capacity Hours
The amount of production capability a company can expect to achieve under normal circumstances over a specific period.
Quantity Labor Variances
The variation between the actual number of labor hours utilized and the expected hours, usually impacting the cost of production.
Price Labor Variances
Refers to the difference between the actual labor cost incurred and the standard labor cost for the actual production achieved.
Standard Labor Cost
The predetermined cost of labor expected under normal conditions, used for setting budgets and evaluating performance.
Q4: In a certain state, the daily amounts
Q6: A fissure in the earth appeared after
Q18: Use row operations on the augmented matrix
Q26: Use the simplex method to maximize the
Q53: What are the next three terms in
Q64: Use inverse matrices to solve the system
Q110: The sensitivity S to a drug is
Q173: The following table gives the percent of
Q175: A simple economy has an electronic components
Q188: Use row operations on the augmented matrix