Robert is building a deck in his backyard. each piece of wood measures 42.5 inches. if he has 86 boards how like long are they altogether

Can someone me with these two circle theorem questions asap?

Which of the following is not a subset of {1,2,3}?

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