PLEASE HELP! 15 POINTS Order the expressions from greatest to least coefficient of x. Place the expression with the greatest coefficient of x at the top. 12+4x, 13x, 15-x, 14-7xMy 13x, 14-7x, 12+4x, 15-x

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