Use the three steps to solve the problem. the length of a rectangle is 3 times the width, and the perimeter is 22. find the dimensions of the rectangle. {width is a0, length is a1} hurry! i will give points!

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