The total number, n, of employees at a company depends on the company's yearly gross profits according to the equation n=10p+20, where p is the yearly gross profit in millions of dollars. if the yearly gross profit declined from 20 million dollars to 15 million dollars, what was the decrease in the number of employees? f) 70 g) 220 h) 120 j) 50

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: 1, 3 and 5 are correct

step-by-step explanation: