○ What kind of numbers can the variables be? ( only negative, Only positive, both) ____________________
○ What kind of number can the variables be? ( Only whole numbers, All real numbers) ___________________________
○ Since you bought a variety of books. What is the minimum number of board books you can buy? ____________
○ Since you bought a variety of books. What is the minimum number of soft-cover books you can buy? _______________
- The variables can be both negative and positive numbers.
- The variables can be all real numbers.
- The minimum number of board books you can buy is 0.
- The minimum number of soft-cover books you can buy is also 0.