-3x + 5y = 13
X + 4y = -10

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.

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?