Answer:
What kind of problem?
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:
y=mx+b
Step-by-step explanation:
The value of
is 
Explanation:
Given that
and 
<u>The value of </u>
<u>:</u>
The value of
can be determined by substituting x = 5 in the functions f(x) and g(x) and then dividing the terms, we get, the value of 
Thus, we have,

Substituting the value of x = 5 in the functions f(x) and g(x), we get,

Simplifying the terms, we have,

Adding the terms in numerator, we have,

Thus, the value of
is 