D - 2.75 = 7.25 * the answer would be d=10 right if it not plz correct me if I’m wrong

Module 10 coordinate proof using slope and distance answers is quadrilateral abcd a parallelogram? explain how you know.

The vertices of a rectangle are given in the columns of the matrix . if is found to perform a transformation, what are the coordinates of the transformed rectangle? (0, 0), (0, –3), (–3, –3), (–3, 0) (0, 0), (0, 3), (3, 3), (3, 0) (0, 0), (0, 3), (–3, –3), (–3, 0) (0, 0), (0, 3), (–3, 3), (–3, 0)

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?