100 the new york giants estimated that they would have 13 wins this season. however, they only had 3 wins. what was there a percent of error? students answer- 13-3= 10 10 divided by 13 is 0.77 a 77% error what was the students mistake? how do you answer the the question correctly?

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