Do problems 13-18, and cuz its the last assignment from school 48 points,

Turner's mom measured his room to see how long the wallpaper border needed to be. if two walls are 15 feet long and two walls are 12 feet long, how long should the strip of border be cut?

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

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)