Suppose that on a parabola with vertex V and a focus F there exists a point A such that A F=20 and A V=21. What is the sum of all possible values of the length F V ?
Answer Choices
A. 13
B. \dfrac{40}{3}
C. \dfrac{41}{3}
D. 14
E. \dfrac{43}{3}
Suppose that on a parabola with vertex V and a focus F there exists a point A such that A F=20 and A V=21. What is the sum of all possible values of the length F V ?
Answer Choices
A. 13
B. \dfrac{40}{3}
C. \dfrac{41}{3}
D. 14
E. \dfrac{43}{3}