I don't know why but i just can't complete this question. please help :)

What is the simplified expression for 6(2(y+x))

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.

Which is the graph of the function y=2(4)^x