Afactory worker in cambodian makes 320,000 cambodian riels per month. if 1 u. s. dollar equals 4000 cambodian riels, how much does the factory worker make in u. s. in dollars per year?

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.