So whats the rest of this question? its uncompleted.
Answer:
Not probabillity of picking a green marble is 80%
Step-by-step explanation:
I'm assuming this is multiple choice and you forgot to post the answers. I'll take a guess and say it probably looks something like this:

Because you can't take the square root of a negative number without getting an imaginary result, resulting in the function having a closed domain limit.
Answer:
B
Step-by-step explanation:
1^2+8^2=