Answer:
d is the right answer hope you get it right
Add 2x to both sides,
3x+9=18
Subtract 9 from both sides. 3x=9
Divide both sides by 3.
x=3
Answer:

Step-by-step explanation:
Since they have the same denominator (the number on the bottom), you can just subtract the numerators (the numbers on the top). So 3-2 is 1. You always leave the denominator as it is, don't subtract it.
The expected value would be 12 as it has the highest P(outcome).
Answer:
5
Step-by-step explanation: