Write a Quadratic Function f whose only zero is -7

What signals you that factoring by grouping is the best method to use when factoring a problem?

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.

Divide. write in simplest form 41/6 divided by 10