What are the coordinates A' B' C' and D' after dilation with a scale factor of 2? Pre-image coordinates are: A(-2,-1) B(1,-1) C(1,-3) D(-2,-3)

Could somebody me with this radical simplification?

Is there an x intercept in the equation 60*1.15^x

If the altitude is drawn to the hypotenuse of a right triangle, then the two triangles formed are similar to the original triangle and to each other. which set of triangles shows the similar triangles created by the altitude in the diagram?