Help please ASAP ILL GIVE BRAINLIST

Which graph represents the following piecewise defined function?

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?

Which of the following circles have their centers on the x-axis? check all that apply.