Below is a histogram representing the test scores from Mrs. Jackson's 2nd period History class. Which set of scores below could be represented by this histogram?

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 statement is true? 2x^2-9x+2=-1

Asap! i'm not good math and i'm lost.