A parabola has a vertex of (3, 6) and passes through the point (1, 42). We can model the parabola using a function in the form of f(x) = a(x - h)2 + k, where a, h,
and k represent real numbers.
Find the value for a.

Can someone answer this 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

Margie is practicing for an upcoming tennis tournament. her first serve is good 20 out of 30 times on average. margie wants to know the estimated probability that her first serve will be good at least four of the next six times she serves. how could she design a simulation for this scenario?