The probability that an event will occur is 7/8 which of these best describes the likehood of the even occurring

Very Likely

think of it this way

you have a 7/8 chance of getting electrocuted by sticking your hand in the toaster

you have a 1/8 chance of this event not occurring when you stick said hand in the toaster

so its VERY LIKELY that you will be electrocuted if you stick your hand in a toaster

hope that helps!

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this