A marble is selected at random from a jar containing 3 red marbles, 6 yellow marbles, and 2 green marbles. What is the probability that ... a) the marble is red? % (Give answer rounded to the nearest tenth of a percent.)
b) the marble is yellow or green? % (Give answer rounded to the nearest tenth of a percent.)
c) the marble is either red or green? % (Give answer rounded to the nearest tenth of a percent.)
d) the marble is red and green? % (Give answer rounded to the nearest tenth of a percent.)