You just bought 4 bags of chips and 3 cans of soda and paid $9.75. As it is being bagged, you notice one bag of chips has expired. Instead of choosing replacements, you decide to get a refund. You get $2.75 back. How much does one bag of chips cost? How much does one can of soda cost?

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