Can someone help me find the area of triangle KLM?

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !

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

Answer! if you don’t mind, can you explain