PLEAS HELP WITH THIS ONE QUESTION

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.

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b