Answer:
3.5lbs
Equation: 4x+3=17
Step-by-step explanation:
4x+3=17
Were trying to find the book weight, so take away the bag's weight (3lbs) from the total (17lbs): 17-3=14
Next, there are 4 copies of textbooks... so now you divide 14 by 4
14/4 = 3.5lbs