Im timed pleasee help

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

Need on this geometry question. explain how you did it.

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?