Answer:
The answer is A.
Step-by-step explanation:
Recall SohCahToa, where
.
The opposite side (to angle C) is 24, while the hypotenuse is 26.
Thus, we will have...

The answer is A.
Check the picture below.
now, we know the directrix is at y = 1, and the focus point is at 1,3, well, notice the picture, the distance between those fellows is just 2 units.
the vertex is half-way between those fellows, therefore, the vertex will be at 1,2.
the distance "p", from the vertex to either the directrix or focus, is really just 1 unit. Since the focus point is above the directrix, is a vertical parabola, and it opens upwards, like in the picture, and since it opens up, the "p" value is positive, or +1.
(x-y)(x-7)
You can get this by using the splitting method.
Do they want you to label everything, what are they looking for?