Pls help thank u univese

Find the value of x for which the lines are parallel.

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

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?