Awhite pine tree grows at an average rate of 3 cm per year. an oak tree grows at an average of 1.5 cm per year. if a white pine is currently 300 cm tall and an oak tree growing nearby is 450 cm tall, how long will it take the white pine to outgrow the oak tree?

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

If x+y+z=0 what is the value of [tex] {x}^{3} + {y}^{3} + {z}^{3} [/tex]

Alice is paying her bill at a restaurant. but tax on the cost of a male is 5%. she decides to leave a tip 20% of the cost of the meal plus the tax