DO, 2 of X = (2, -2) (4, 0) (8, 0)

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Ineed to know the answer to this algebra question.

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