<h2>
Hello!</h2>
The answer is:
The second option,
b.) 
<h2>
Why?</h2>
We are given the functions E(x) and K(x), since they both are function of the same variable, we need to add them in order to find the correct option.
From the statement we know the functions:

and

So, adding the functions we have:




Hence, the answer is the second option,
b.) 
Have a nice day!
The answers are the second, fifth, and sixth.
Answer is the third one. It is the only answer where all points work in the equation.
Answer: third choice
Rolling an even number would be 1/2 possibility while flipping tails would be 1/2 possibility hence the answer is 1/4
0.2 since it is not a fraction.