Answer: It would be the second one.
Step-by-step explanation:
Inverse means opposite.
If two events are independent, then P(A and B) = P(A) x P(B).
In your situation, you need to solve 0.185 = 0.25 x P(B).
Can you take it from there?
No "x" can not be repeated, a function has one x-element and one y-element
The answer is, x-5 equals to 0. So x equals to 5. So your answer is 5.