Situation: A 22 gram sample of a substance that's used to sterilize surgical instruments has a k-value of 0.138. N = Noe -kt No = initial mass (at time t = 0) N = mass at time t k = - a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

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.