I believe it is 10 and however many zeros there are and there's 6 so if I'm not mistaken the answer is

.
This is the quadratic formula.
Answer:
A
Step-by-step explanation:
The 3rd one because you have to get the y-intercept also which is -6
I don't know what your story is, but in a story, usually a problem would build tension.
Hope this helps!! :)