Y varies directly with the cube of x and inversely with the square of z, when x=4 and z=2, y=8

Three people are traveling and need to exchange the currency of their native country for the currency of the country they are visiting. drag each exchange to the category that shows the ratio of currencies in that exchange.

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.