Dion predicted that he would sell 87 art prints. he actually sold 100 art prints. what are the values of a and b in the table below? percent error item approximate value exact value error absolute error ratio percent error art prints 87 100 a b

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