3√20+2√125 this has to be done in the surds rules although I do not understand

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?

Alonso walked with his friend andy one day, and wanted to compare their speeds. alonso walked 3 miles in one hour, and andy walked 2 miles in 2 hours. complete the table to graph the relationship for each person.

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a.p.