Hiroto spends $68 on ebooks and paperback books combined . Each ebook he buys costs $12 . If hiroto buys x e-books and y paperback books, which of the following equations best model's the situation ?

Acable company claims that the average household pays $78 a month for a basic cable plan, but it could differ by as much as $20. write an absolute value inequality to determine the range of basic cable plan costs with this cable company. a. |x − 78| ≥ 20 b. |x − 20| ≥ 78 c. |x − 20| ≤ 78 d. |x − 78| ≤ 20