if 2,000 pounds of paper equal 17 trees then multiply it by 2
4,000 pounds of paper = 34
if you divide 2,000 by 2 then you would get 1,000
1,000 pounds of paper = 8.5 trees
Now add them together:
34+8.5=42.5
5,000 pounds = 42.5 trees.
if you multiply it by 2 you'll get your answer for 10,000 pounds
10,000 pounds= 85 trees
Hope this helps! :3