SOLUTION: <a href="http://photobucket.com" target="_blank"><img src="http://i83.photobucket.com/albums/j300/q43000gt/77q13g1.gif" border="0" alt="Photobucket - Video and Image Hosting"></a>

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Question 47495: Photobucket - Video and Image Hosting
Photobucket - Video and Image Hosting
Answer by stanbon(57219) About Me  (Show Source):
You can put this solution on YOUR website!
EF = 4x+5
EQUATION:
(4x+5)/(2x+4) = 15/10 = 1.5
1.5(2x+4)=4x+5
3x+6=4x+5
x=1
EF=4(1)+5=9
Cheers,
stan H.