Consider the following piecewise function below for questions 2-3. PLS HELP (step by step explanation preferred.)

Solve for x, y, and z. show all steps.

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

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?