Please help me as soon as possible!
36 - 2s² + t²
S = 2
T = 8

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?

Is the square root of 4 plus the square root of 16 rational?

Can someone me out here number 4 plz