Ireally need this i will give brainliest
which is an example of an algebraic expression?
a4(3 + 8)
b18^{2}
c3 – a
d21 • 4

Describe a way that someone could estime the length of a book

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.

Me with this one question, and i'll upvote the brainliest answer