We know that from this situation, the probability of drawing a single green marble is 1/3. However, to find the probability of drawing 3 green marbles, we will need to do:
2=8x-2/9 add 2/9 to both sides 2 and 2/9=8x 2=18/9 2 and 2/9=18/9+2/9=20/9 20/9=8x multiply both sides by 9 20=72x divide boht isdes by 72 20/72=x=5/18