3x - 4 + 2(2 + 4x)? I need help.

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?

Could someone with number 1 and 2

Which of the functions graphed below has a removable discontinuity?