1/2 17/2 midpoint thanks in advance

Which expression is equivalent to sq-80

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

Three times the sum of a number and seven is negative thirty-six. what is the number?