What is the next term in the following pattern ? 2,9,44,219,...

Which of those sequences is a geometric sequence

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.