In April 2011, am online social networking site had approximately 200 million registered accounts. In August, the number of registered accounts had risen to 3.62 x 10^8. In scientific notation, how many more users were there in August that in April?

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

Do more republicans (group a) than democrats (group b) favor a bill to make it easier for someone to own a firearm? two hundred republicans and two hundred democrats were asked if they favored a bill that made it easier for someone to own a firearm. how would we write the alternative hypothesis?