There is 7 more math problem me out

1. 2x+ 4y = 10
-4x+ y =-22

2. 5x+y=-12
5x-7y=4

3. 7x+y=10
-7x-10y=26

4. 4x-2y=-14
3x-2y=-14

5. 6x+2y=20
-3x+3y=-30

6. -5x+4y=-3
-9x-y=30

7. -9x+6y=27
-x+3y=10

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.

How can writing phrases as algebraic expressions you solve problems?