Cover the Grid with 3X5 Rectangles

Use the 3X5 rectangles to cover ABCD.
1. What is the maximum number of 3X5 rectangles that will cover the 17X22 grid?[br]2. How many different ways can you cover the 17X22 grid with the maximum number of 3X5 rectangles?
– Terry Lee Lindenmuth

Information: Cover the Grid with 3X5 Rectangles