The ratio of black walnut to red oak trees at a tree farm is 4:5. The tree farm has 1200 black walnut trees. How many black walnut and red oak trees does
the tree farm have altogether?

What is (28 + 7 + 6 + 3) x 1/2 show your work

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?