Question

Mr. Hann is trying to decide how many new copies of a book to order for his students. Each book weighs 6 ounces.

Which table contains only viable solutions if b represents the number of books he orders and w represents the total weight of the books, in ounces?

Answer 1

I don't see the tables — could you paste them?

In general the viable solutions must satisfy w = 6b and b must be a whole number (0, 1, 2, ...). Example valid table:
b: 0, 1, 2, 3, 4
w: 0, 6, 12, 18, 24

Any table whose pairs all satisfy w = 6b (with b nonnegative integer) is correct.