What series of transformations map △abc onto △def to prove that △abc≅△def ?

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?

We just started the introduction into circles and i have no idea how to do this.

Find the root(s) of f (x) = (x- 6)2(x + 2)2.