Please help ASAP, this is probability and function

First find total number of marbles: 88 + 88 + 55 = 231

Red or blue marble: 88 + 88 = 176

176/231

Simplifies to 16/21

16/21

Step-by-step explanation:

We need to first find the probability that we get a blue marble, then the probability that we get a red marble, and then add those two probabilities together.

Probability is essentially just (# times specific event can occur) / (# times a general event will occur).

Getting a Blue Marble:

The specific event here is getting a blue marble. Because there are 88 blue marbles, the number of specific events is 88. The general event is choosing any marble. There are a total of 88 + 55 + 88 = 231 marbles, so the number of times the general event occurs is 231.

Our probability is thus 88/231.

Getting a Red Marble:

The specific event now is getting a red marble. Because there are 88 red marbles, the number of specific events is 88. The general event is choosing any marble. There are a total of 231 marbles, so the number of times the general event occurs is 231.

Our probability is once again 88/231.

Now, add up these probabilities:

88/231 + 88/231 = 176/231 = 16/21

The answer in simplest form is thus 16/21.

9 x 8 divided by (5-3)=36