If pqrs is a paralleogram what's the length of rs

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?

The table represents a linear function. what is the slope of the function? –6 –4 4 6

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?