Answer: The answer to your question is 13.636. I hope this helps you :D
Answer:
The probability that the person will not be a senior
P(E⁻) = 1 - P(E)
= 
Step-by-step explanation:
<u><em>Explanation</em></u>:-
Given A high school club has 10 members who are seniors and 8 members who are juniors
n(S) = 10 + 8 = 18
If a member is randomly selected to be the club president
Let 'E' be the event that the person will be a senior
The probability that the person will be a senior


The probability that the person will not be a senior
P(E⁻) = 1 - P(E)
= 
The answer is 1 because 1×1=1
2x - 3 = 15
2x = 15 + 3 = 18
x = 18/2 = 9
Therefore, the equired value of x is 9.