I don't understand this problem

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

When only separate discreet points are graphed it is called?

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28