Answer: second option.
Step-by-step explanation:
You must apply 
Then, given the right triangle and the angle D, the opposite side and the hypotenuse of the triangle are the following:

Therefore, when you substitute values, you have:

Reduce the fraction, then you obtain:

Answer:
(3, 0) (7, 0)
Step-by-step explanation:
the parabola intersects the x-axis at these points
Answer: the answer is C . 19.5 units - APEX :D