10*2=20
20*10=200
i think the answer is E
Answer:

Step-by-step explanation:
Let us suppose that items carried by one hiker is
We know that everyone will carry same number of items
hence for a group of
hikers, total number of items will be 
5280 per mile ! 21120! Good luck!
Answer:
3y^2 - (y + 2) (y - 2) = 0
<=> 3y^2 - (y^2 - 4) = 0
<=> 2y^2 + 4 =0
<=>y^2 + 2 = 0
=> Because y^2 is always equal or larger than 0, there is no real solution.
Hope this helps!
:)