Alice is designing a book shelf. the segment lq represents the base of the book shelf. alice wants to construct a line to represent a rack passing through r and parallel to side lq. she uses a straightedge and compass to complete some steps of the construction, as shown below:

How can we find the measure of an exterior angle if we know the measurement of an interior angle

Imagine a new pasture with grass growing on it. every day after the seeds have germinated, the number of blades of grass in the pasture triples. after 18 days, the entire pasture is completely covered in grass. how many days did it take for the pasture to be one-third covered in grass?

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?