Marco is going bowling with some friends. It cost 5 dollars to rent a pair of bowling shoes and 3 dollars per game. If marco spends 11 dollars how many games did he play?

What is the value of x when x + 7 = 21?

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?