I just won't people to get more points so what's 2+2 :)

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

What is the relationship between all triangles that can be drawn given the same three angles

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.