A waterfall has a height of 1700 feet. A pebble is thrown upward from the top of the falls with an initial velocity of 24 feet per second. The height of the pebble h in feet after t seconds is given by the equation h=-16t^2+24t+1700. How long after the pebble is thrown will it hit the ground?

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

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?