In Lydia's room, there are 4 shelves with 9 books on each shelf.

How many books are there in Lydia's room in all?
(1 point)
24
36
32
28

The correct answer is 36. To find the total number of books, we need to multiply the number of shelves by the number of books on each shelf: 4 shelves x 9 books on each shelf = 36 books.