Answer ! a 5 gallon mixture contains 40% acid. a 3 gallon mixture contains 50% acid. what percent acid is obtained by putting the two mixture together? show your work.

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.

Could somebody me with this radical simplification?

5x−4≥12 or 12x+5≤−4 can you with this problem