You are trying to earn 4000 points in a computer game. in the first round, you get 1540 points. in the next round, you get 780 points. how many more points do you need?

Officer brimberry wrote 24 tickets for traffic violations last week, but only 9 tickets this week. what is the percent decrease? give your answer to the nearest tenth of a percent.

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

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.