I need help i don't get ittt

The table above shows approximate conversions from gallons to liters. what is the value of x?

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.

The sum of two numbers is 12 and their difference is 18 what are the two numbers