Chef Alfredo has noticed some changes in his business. He usually sells 45 pizzas on Sunday afternoons. During football season, he has big television screens televising NFL games and he sells 72 pizzas. What is the percent change? Is it an increase or decrease? Please show your work and answer in a complete sentence.

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