Question

The Consumer Price Index (CPI), which measures the cost of a typical package of consumer goods, was 225.2 in 2011 and 249.9 in 2016. Let x=11 correspond to the year 2011 and estimate the CPI in 2014 and 2015. Assume that the data can be modeled by a straight line and that the trend continues indefinitely. Use two data points to find such a line and then estimate the requested quantities. Let y represent the CPI. The linear equation that best models the CPI is____ (Simplify your answer. Use integers or decimals for any numbers in the equation. Round to the nearest hundredth as needed.)

          The Consumer Price Index (CPI), which measures the cost of a
typical package of consumer goods, was 225.2 in 2011 and 249.9 in
2016. Let x=11 correspond to the year 2011 and estimate the CPI in
2014 and 2015. Assume that the data can be modeled by a straight
line and that the trend continues indefinitely. Use two data points
to find such a line and then estimate the requested quantities.
Let y represent the CPI. The linear equation that best models
the CPI is____ 
(Simplify your answer. Use integers or decimals for any numbers
in the equation. Round to the nearest hundredth
as needed.)

Added by Luz E.

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