I'm not sure how to set this up and I also don't know the steps. if you know, can you show it?

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

Which number line correctly shows 0.8 + 0.3?

Arectangle has a length of 6cm by 8cm what is the length of a diagonal of the rectangle