Answer:
0.072 = 7.2%
Step-by-step explanation:
probability that Ms. Florina will select a blue rubber band:
We have 18 blue of a total of 50, so probability = 18/50 = 0.36
probability that Ms. Florina will select a green rubber band:
We have 10 blue of a total of 50, so probability = 10/50 = 0.2
The probability that she will select a blue rubber band, return it to the bag,
and then select a green rubber band:
We just need to find the product of the probabilities above:
Probability = 0.36 * 0.2 = 0.072 = 7.2%