How much is 7 stacks of 6 dimes and 8 stacks of 5 nickels and 1dime and 1 nickel

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.

Joanie watched 1 out of three of a movie in the morning

Will mark brainliest! ( explain the answer too, it can be one sentence)