First fine the dialation divide 6 by 4 you get 1.5 so the dialation of these shapes is 1.5 now you just simply find the measurments.... 9 divided by 1.5 is 6 so BC is 6. now 7*1.5 is 10.5 so QR is 10.5 now the angles never change in a dialation so <P= 86*.
Hope this helped you!!! have an amazing day!
