An auditorium has 20 seats on the first row, 24 on the second row, 28 on the third row, and so on and has 30 rows of seats. How many seats are in the 30th row?

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