Guys please answer question #17 and 18 below please and thank you. Sorry about this photo has been rotated, I'm gonna try my best to take the picture properly.

What two criteria are needed for triangles to be similar

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis.how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

The volume of a cone is 37x3 cubic units and its height is x units. which expression represents the radius of the cone's base, in units? 1 s o 3x o 6x obx 93x2