Pls help!! Consider a right triangle. How would you describe the measures of its exterior angles? Complete the explanation.

An exterior angle will be right when paired with a right adjacent interior angle. There can be only ___ [one, two, three] right angle(s) in a triangle. Since a triangle must have two or three ___ [acute, obtuse, congruent] interior angles, the other two exterior angles must be ___ [obtuse, acute, congruent].

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