A bag contains 8 red marbles, 4 white marbles, and 6 blue marbles. find P (red or blue)

7/9 or ~77.7778% or 0.777778

Step-by-step explanation:

First you need to find the total amount or marbles.

8+4+6=18

Next, find the sum of just the blue and red marbles.

8+6=14

Now, find the probability by dividing or simplifying the number of blue and red by the total.

14/18 = 7/9 OR ~0.777778