A certain company changes for teling a rectangular room include the cost of the material used and a flat rate of instalitation. Te lenght of certain room is 2 fett more than with, and the company's chrages, in dollars, for tiling the room are 12.5x(x+2)+400

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