How much of a tip do i give for 14 dollars

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

Askateboard ramp is in the shape of a right triangle what is the height of the ramp

With alll of except for the 2 that i did already