Can somebody me with number 7? explain as well! : )

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

What is the prime factorization of 23 ?me with this question

Which statement best describes how to determine whether f(x) = x squared- x +8 is an even function ?