Find A u B, step by step isnt needed

What is the rule for reflection across the y axis

Is trapezoid abdc the result of a dilation of trapezoid mnpq by a scale factor of ? why or why not? yes, because ab and cd are each the lengths mn and qp. yes, because sides ab and cd are parallel to sides mn and qp. no, because ab is the length mn but cd is the length qp. no, because sides ab and cd have different slopes from sides mn and qp.

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?