Answer:
5) 19/4
7) 49/5
Step-by-step explanation:
The answer is 6t^2+2.5x^2-0.5t-5.4
the answer to your question there would be 12
yes it is right when the vertex of the first polygon is located on 3 - 2 after rotation the work vertex will be there on (2 , 3) it is right
