Joel is making a scarf. The diagram shows the ratio of knit stitches and purl stitches of Joel's scarf.
A tape diagram showing 2 parts labeled "knit" and 7 parts labeled "purl"
Based on the ratio, how many purl stitches are there if there are 888 knit stitches in one row of Joel's scarf?

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.

What is the solution to the equation e3x=12? round your answer to the nearest hundredth