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Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

The customer price index(cpi), which measures the cost of a typical package of customer goods, was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely. use data points to find such a line and then estimate the requested quantities

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).