What is x in this 45 45 90 right triangle

With this question! what is process of elimination? ? p.s. my brothers acc got banned so add his new one @ yamauchiyamyam17

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?

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.