2/7 divided by 1/2 as a mixed number

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

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

Which of the functions below could have created this graph?