2d=a-b/b-c - solve for a

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.

Who long does it take to drive 150 miles at 45 miles per hour

Which statement best describes how to determine whether f(x) = x squared- x +8 is an even function ?