a school takes feild triod tk the skating rink. when thd school brings 30 people they are charged 180 dollars. when the school brings 50 people they are charged 220 dollars. write and equation in slope intercept form to represent this situation and explain what the slope and y intercept represent.

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