In 1980, the average price of a gallon of gas was $1.22,

In 1980, the average price of a gallon of gas was $1.22, and in 2015 the average price was $2.52. Compare the increase in the price of a gallon of gasoline to the increase in price corresponding to the CPI.

Consumer Price Index. In Exercises, use the Consumer Price Index values from Table 2.2.