If r varies inversely as tand r = 18 when t = -4, find r when t=-11

What are the domain and range of the function? f(x) = -4 (sqrt)x

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?

Iwill give you ! what is the measure of ∠v ?