I need help I turn this in in less than 20 min

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

Acircle has a circumference of 28.36 units what is the diameter of the circle

Tan198=asin164=? how to solve this? ?