The measure of one angle is described as 10 more than four times a number its supplement is twice as large

A- 4x + 10 + 2(4x + 10)=180
B- 4X +10+ 4X +10= 180
C- 4X +10+10=180

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