Garys is a small publishing company that publishes math books. the production costs include a one time cost for editing the book, which is 1,050 for the book the company is currently working on (the universe of math ) once the book is in production, the only cost will be the variable cost printing, which is $15 per book. the company will market the book at a price of $35 part b what equation represents the profit earned by selling x books

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

answer: true

step-by-step explanation: