Find the focus and directrix of the parabola whose equation is f(x) = 1/2x^2 - 2x - 4.

(98 points) i need with 5 questions. answer definitions are welcomed, but not necessary.

98 point question what is the record for most points in one

The random variable x is defined as the number marking the sector in which the arrow lands when the spinner in the diagram is spun once.