Abc has vertices a(1,5), b(9,7),and c (7.13). m is the midpoint of ab. and n is the midpoint of bc. which of the following is the length of mn? a. 3 b. 4 c. 5 d. 6

Can someone check if i did this correct. it’s number 4 if you’re wondering.

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

Which rotation about its center will carry a regular hexagon onto itself