The following triangles are similar. Find x.
12
10
13.5
15
14

One of the inventors of integrated circuits observed that the number of transistors that fit on an integrated circuit will double every 24 months. what type of relationship most appropriately models this situation?

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Which of the following can be used to explain a statement in a geometric proof?