Help with the question plz people

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.

Which statements regarding the diagram are true? check all that apply.

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.