Oni was timing her 100 meter sprints. Her first five sprints were 12.568 seconds, and 12.601 seconds. Which two estimation techniques will giv
five sprints?
front-end and clustering
front-end and rounding to the nearest tenth
clustering and rounding to the nearest tenth
rounding to the nearest tenth and rounding to the nearest hundredth

We just started the introduction into circles and i have no idea how to do this.

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

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.