Match each angle with its equivalent negative coterminal angle

3π2

3

π

2

−π2

-

π

2

7π3

7

π

3

21π5

21

π

5

π6

π

6

2π

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