a manager purchased a total of 22 coffee mugs and key chains. Each coffee mug cost $8.50, and each jet chair cost $2.75. if the manager spent a total of $132.50, how many coffee mugs did the manager purchase?

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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