The result of which expression will best estimate the actual product of (-4/5)

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?

Adele is five years older than timothy. in three years, timothy will be 2/3 of adele’s age. what is adele‘s current age?

Agrasshopper weighs 0.89 grams. express the grasshopper’s weight in scientific notation.