A wedding planner uses 72 ivy stems for 18 centerpieces. when she arrives at the venue, she realizes she will only need 16 centerpieces. How many ivy stems should she use do that ratio of ivy stems to centerpieces stays

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