F(2)= -3 as a coordinate point?

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

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

If value of cos330° is √3/2 then find tan165°.