(Re Post) Answer these three questions: 1. Draw 16 stairs. put them equally into 2 sets. how many stairs are there in each set?

2. Abel drew some triangles. his drawing had 21 vertices. how many triangles did he draw? write a division sentence to answer this question.

30 ÷ 6 = 5
write a related multiplication sentence.

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?

What is the inverse of the function f(x) = 2x + 1?

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