Two buildings stand 90 feet apart at their closest point. At those points, the angle of elevation from the top of the shorter building to the top of the taller building is 12\degree°. How much taller is the taller building than the shorter building? Round to the nearest tenth.

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