Four more than two-thirds of a number is 22 what is that number

1. what are the missing reasons in the proof 2. it's in the second picture and 3

Which graph represents an even function?

Which of the following equations is of the parabola whose vertex is at (4, 3), axis of symmetry parallel to the y-axis and focus at (4, -3)? a.) y+3=1/24 (x+4)^2 b.)y-3=-1/24 (x-4)^2 c.)x-4=-1/24 (y-3)^2