What is the slope of the line that passes through the points (-9,8) and (-21, 10)? Write your answer in simplest form.

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.

Ineed me i stuck and i don’t want to get it wrong

10% of 1,900,000. show me how you got the answer