Please please help please
What is the domain of the function below?

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Combine the information in the problem and the chart using the average balance method to solve the problem.

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. which function could heather be writing? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36