Solve 2x + 9 (x-1) = 8 (2x + 2) - 5

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.

If 20% of a number is 35, what is 50% of that number?

Which representation has a constant of variation of -2.5