Find the first four terms of the sequence, an = 4 − 2n a1 = 4 − 2( ) = a2 = 4 − 2( ) = a3 = 4 − 2( ) = a4 = 4 − 2( ) =

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