Ineed with my math homework all of it

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

Find the domain and range of the following function f(x) = 51x - 21+ 4

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0