Landon is building new bookshelves for his bookstore's new mystery section. Each shelf can hold 37 books. There are 1,221 mystery books. How many shelves will he need to build?
(Help me pleaseee)

Raj encoded a secret phrase using matrix multiplication. using a = 1, b = 2, c = 3, and so on, he multiplied the clear text code for each letter by the matrix to get a matrix that represents the encoded text. the matrix representing the encoded text is . what is the secret phrase? determine the location of spaces after you decode the text. yummy is the corn the tomato is red the corn is yummy red is the tomato