A bookstore buys used paperback books based on their weight. The store pays a constant amount per pound. Danielle sold 8 pounds of books to the bookstore for $22. Which equation shows the relationship between the number of pounds of books (x) sold to the bookstore and the amount (y), in dollars, the bookstore pays for the books?


A. y = 22x + 8

B. y = 8x + 22

C. y = 22/8 x

D. y =8/22 x