How does this one work? I have an idea of it, I know that the increasing one goes up and the decreasing down, but I do still need help.

Bruce is getting materials for a chemistry experiment his teacher gives him a container that has 0.25 liter of liquid in it.bruce need to use 0.4 of this liquid for the experiment. how much liquid will bruce use?

Aiden buys two bags of chips at $1.09 each and a 20 ounce soda for $1.20 at the gas station.he knows that the state tax is 5.5. how much change will he receive from a $5 bill?

The distance between two points is 6.5cm and scale of map is 1: 1000 what's the distance between the two points