Anyone can lend me a hand? what is the rule for this number sequence (for both chairs and tables)?

1 table, 4 chairs
2 tables, 6 chairs
3 tables, 8 chairs
4 tables, 10 chairs

Convert 16 yards to feet use the conversion rate 3 feet = 1 yard

Rearrange the formula c^2 = a^2 + b^2 for b

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?