7r+10=3r+50

show the work with the answer. also, if you could do the check, that would be very . you s much : ))

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.

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared