On james’s mp3 player, he has 12 sad songs and 40 upbeat songs that he wants to put into playlists. he wants to have the same number of sad songs and upbeat songs in each playlist. what is the maximum number of playlists that he can create?

2 playlists
3 playlists
4 playlists
10 playlists

4 playlists or c

Step-by-step explanation:

I got a 100%

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