4.4 inches because once you add 2 and 2 you 50 then add ten and you get 60
It gained 2 lb. because if you subtract 8-6 you would get 2. So Arfus gained 2 lb.
The unit rate would be 3 trucks per 1 hour you can find this by dividing 18 and 6 by 6
Sorry I'm late but the answer is 1/2. I just took the quiz and I got 100%