Can somebody me me with number 9 plzzz

The late fee for library books is $2.00 plus 15¢ each day for a book that is late. if maria’s fee for a late book was $3.20, write and solve a linear equation to find how many days late the book was.

With this question! what is process of elimination? ? p.s. my brothers acc got banned so add his new one @ yamauchiyamyam17

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