Me with this and i have to show my work

I've never been good at math he told he loves but he keeps cheating on me, so it ain't adding up sis

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.

Find the solution set of this inequality. select the correct graph. |8x+16|> 16