Someone please tell me how to do this 15 points and give me the answer

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

Would greatly appreciate these 3 answers

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