Mark gets paid $7.00 per hour doing lawn care during the summer. he received $30 in tips. he made $164.00 how many hours did he work. write and solve and equation

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.

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.