“mia is finally able to upgrade her cell phone. the one she wants costs $220 but she is able to get it for 60% off. she has a coupon for an additional 10% off. how much does she pay for her phone? ” i’ve tried every way i know, but i can’t get the right answer. it is a multiple choice question and the only three answers are 1.)$79.20 2.)$66.00 3.)$96.80

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