find the area of the circle

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

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?