Mary needs a 90%on her final exam the exam has 75 questions. how many questions does mary need to get an a ?

Negative 5 1/12 + negative 4 1/4 + 6 3/4

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?

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?