The probability of having a green seed and a round seed is 1/8th
Assuming the question is "how much more money needs to be raised..."
Add the contributions:
5,358 + 2,834 + 4,132 = 12,324 < this is the current total amount raised. subtract this from the goal, 14,000 to find out much more money is needed for the playground.
14,000 - 12,324 = 1,676
$1,676 is still needed in order to create the playground.