Which step can be used to prove that triangle efg is also a right triangle?

Me find the value of x each figure.

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

Acd that is originally priced at $15.85 red-tagged for the sale. what is the sale price of the cd