For this case we have the following polynomial:

We must find the greatest common factor of the terms of the polynomial.
The GCF of the coefficients is given by:

Then we look for the GFC of the variables:
We have then:

Finally rewriting we have:

Answer:
the complete factored form of the polynomial is:

That it has the highest y-intercept of all of the three linear functions.
(and that the question could be worded better, but don't put that in your answer)
It would either be 21 or 25 as they both have the same amount of factors :)
Answer:
lo que sea me lo pones en español plis yo te aydo
Step-by-step explanation: