The volume of thhis cylander is 19,270.18 and the radius is 19 what's the height difference

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.

What is the number 321,000,000 in scientific notation? also what is the number? ?

The graph of f(x) = |x| is transformed to g(x) = |x + 11| - 7. on which interval is the function decreasing?