Question and answers are in the image .

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

2.5 milligrams is equivalent to how many grams

Benjamin is making bow ties. how many 1/2yards lomg bow ties can he make if he has 18 feet of fabric?