Question 23 Calculate the circulation of the field Faround the closed curve C. F = (-x - y) i + (x + y)j, curve C is the counterclockwise path around the circle with radius 6 centered at (3,2)

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