What number should be added to both sides of the equation to complete the square? x2-10x=7

Which of the following equations is of the parabola whose vertex is at (2, 3), axis of symmetry parallel to the y-axis and p = 4? a.)y-3 = 1/16 (x-2)^2 b.)y+3 = -1/16 (x+2)^2 c.)x-2 = 1/16 (y-3)^2

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Which one ? is the answer and how to find this answer