A map of a city uses the scale 1 cm= 75 m. On the map, Second Avenue is 21 cm long. If there is a traffic cone at the start of Second Avenue and a cone every 5 m along the road, how many traffic cones are there in all?
There are how many
traffic cones in all?

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