half way through a bus route,23 students have been dropped off and 48 remain on the bus. write an equation to determine whether there are 61 or 71 students on the bus at the beginning of the route

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

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?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.