Abag contains only blue and red marbles. asman takes 1 marbles at random out of a bag. probability that she takes a red marble out of the bag is one in five asman returns the marble to the bag and adds 5 more red marbles to the bag. probability that she takes one red marble out of the bag is now one in three how many red marbles were originally in the bag

Which of the following comparisons is true? a: high school tests generally cover more material than college exams. b: your college curriculum is more fixed and standardized than your high school curriculum. c: you get more personal attention in class from your college professors than from your high school teachers. d: college professors usually don't review test material in class the way high school teachers do.