What are the constraints of the situation?

What kind of numbers can the variables be? ( only negative, Only positive, both) Positive

What kind of number can the variables be? ( Only whole numbers, All real numbers) Whole Numbers

Since you bought a variety of books. What is the minimum number of board books he can buy 1

Since you bought a variety of books. What is the minimum number of soft cover books you can buy? 1

The constraints of the situation are that the variables can only be positive numbers and whole numbers. Additionally, the minimum number of board books that can be bought is 1, and the minimum number of softcover books that can be bought is also 1.