Please help I'v been watching videos but I'm still getting it wrong

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?

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2 acellus answer

How do you write 600 as a product of its prime factors (index! )