Point D is on line segment \overline{CE} CE . Given DE=x+10,DE=x+10, CD=6,CD=6, and CE=3x, CE=3x, determine the numerical length of \overline{DE}. DE .

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?

Witch represents the inverse of the function f(x)=1/4x-12

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books