I got 25 (24.738634) sry if wrong
From this picture you can calculate coordinates of triangles' vertices:

.
Since
you can conclude that points A, B, C are rotated by

about the point (-0.5,0) to form points J, G, H, respectively.
Answer: A is correct choice.
Answer:
(in the image)
Step-by-step explanation:
I'm not sure I understood your question completely but I hope this helps.
To find perimeter you add up all the sides so 5cm+6cm+17cm+8cm. This will get you 36cm.
Answer:
D. 20 + 2.50x < 50
Step-by-step explanation:
20 + 2.50x < 50 - the sign has to be less than because Millie wants to spend less than $50