If line l is parallel to line m, find the value of x and y

Ihonestly don’t understand this at all

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol

Jenny earned a 77 on her most recent test jenny score is no less then 5 points greater then 4/5 of terrance’s score if t represents terrance score which inequality represents the situation