50 points for good answer plz plz plz

How do you summarize data in a two-way frequency table?

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

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?