A state representative wants to know how voters in her district feel about enacting a statewide smoking ban in all enclosed public places, including bars and restaurants. Her staff mails a questionnaire to a simple random sample of 800 voters in her district. Of the 800 questionnaires mailed, 152 were returned. Of the 152 returned, 101 supported the enactment of the ban. What is the statistic?

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

3; 9 is 8 to -4

step-by-step explanation:

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step-by-step explanation: