Find the two square roots of 12(cos pi/3 + i sin pi/3)

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

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?

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.