Anyone help me with this because I don't understand

Cindy uses 1-inch cubes to find the volume of a jewelry box shaped like a rectangular prism. she uses 780 cubes to completely fill the jewelry box with no gaps or overlaps. if the jewelry box is 13 inches long and 5 inches wide, how tall is cindy’s jewelry box?

According to the data set, where should the upper quartile line of the box plot be placed?

On a piece of paper graft y+2> -3x-3 then determine which answer matches the graph you drew