I just need helllp

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?

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11