Hi why did I just draw this on my hand

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 triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2