I NEED HELP WITH GEOMETRY PLEASE HELP

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?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?