4d I think it is right hope that helps
Answer:
I don't know the number of the ratio but i will create an example of 3 ways to write ratio
Let's use the number 10:8
you can write it like
- 10:8 (colon)
- 10 to 8
- 10/8 ( a fraction)
The equation of the parabola is
.. y = a(x +4)(x -2)
Substituting (x, y) = (6, 10) gives
.. 10 = a(6 +4)(6 -2)
The 4th selection is appropriate.
Answer: c ≠ {-7, -3, 2, 5}
<u>Step-by-step explanation:</u>

= 
restrictions:
c + 7 ≠ 0 c - 2 ≠ 0 c - 5 ≠ 0 c + 3 ≠ 0
c ≠ -7 c ≠ 2 c ≠ 5 c ≠ -3