Lucy had half as much money as mel, but since grandma gave them each $20 she now has three-fifths as much. how much money does lucy have?

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

F(x)= 4x g(x) =x-1 what is f(x) divided by g(x)

What is the value of f(x) = 2.2 for f(-2)?