Melanie invest 13,000 dollars into an account at an annual rate of 0.4 simple interest for 36 months. what is the principal of this scenario?

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)

Asap! i'm not good math and i'm lost.

Answer each of the questions for the following diagram: 1. what type of angles are these? 2. solve for x. what does x equal? 3. what is the measure of the angles?