how does the table shows how many gallons of water Veda uses for showers of different numbers of minutes

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Need on this one asap im almost done with this subject

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.