Question

-----------MEDAL AND FAN---------
The weight of the books carried in a backpack depends on the number of books in the backpack. Susans books weigh from 1 pound up to 3.5 pounds each and she carries at most 4 books. Find a reasonable domain and range.

Answer 1

if W is the total weight of books, x is the weight of one book and y is the number of books,
the total weight would be, W=xy
where:
x is greater than or equal to 1 but less than or equal to 3.5
y is greater than or equal to 0 but less than or equal to 4

Answer 2

since it is not stated in the problem if it's possible that Susan will not bring her books with her, then we'll include zero in the domain