Please help quick urgent

Use set buikder notation to represent the following set: {, -2, -1, 0}

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?

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?