Megan, Sam, and Alex are running for class president. 1/4 of the class voted for Megan. 3/10 of the class voted for Sam. Which of the following is true?

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.

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Which expression is rational? 6. , square root two, square root 14, square root 49