Which economic indicator measure inflation?

a. gdp
b. cpi
c. unemployment rate

You can run 4 laps in 10 minutes your friend can run 6 laps in 15 minutes. are these rates proportional

A80-foot piece of siding is cut into three pieces so that the second piece is four times four times as long as the first piece and the third piece is five times as long as the first piece. if x represents the length of the first piece, find the lengths of all three pieces.

Which of these tools or constructions is used to inscribe a hexagon inside a circle?