The hardcover version of a book weighs 7 ounces while its paperback version weighs 5 ounces. Forty-five copies of the
book weigh a total of 249 ounces,
Weight of Books
Number Weight per book
of Books (ounces)
Total Weight
(ounces)
7h
5
Hard Cover
Paperback
Total
Which value could replace x in the table?
45-h
45
249
40 -
50 - 6
5(45) - h
5(45 - h)