What expression can be used for estimating 868 divided by 28

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?

What is the value of x in the following equation. -x ^3/2 = -27

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4