Consumer Price Index Goods and services that cost$100 in 2012 cost $108.6 in 2016, so we say that theU.S. consumer price index (CPI) is 100 in 2012 and108.6 in 2016.a. Write the equation of the linear function y thatrepresents the CPI as a function of the year x.b. Use the equation from part (a) to predict the CPIin 2020.(Source: Social Security Administration)

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