M∠abc=138° and m∠def=31° . which statement is true about ∠abc and ∠def ? a)the angles are neither complementary nor supplementary. b)the angles are supplementary. c)the angles are complementary.

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