Does the shape of the figure change after rotation?

No, rotation only turns the object/shape either clockwise or counter clockwise. But it doesn’t change size or shape.

85

Step-by-step explanation:

Since we're finding the placeholder of r and we're already subtracting, we need to add! What we need to do is add 76 + 9 which equals 85!

Hope this helps you! Good luck with your future work!