Usain Bolt ran 400 meter at the same average speed that he can ran the 200 meter. How long would it take him to run 400 meters? round your answer to netherworld nearest hundredth of a second

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.

Atotal of 766 tickets were sold for the school play. they were either adult tickets or student tickets. there were 66 more student tickets sold than adult tickets. how many adult tickets were sold?

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2