Help me out please
and i need a step by step explanation

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 is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12