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May 28, 2015

Homework Help: algebra

Posted by HG on Saturday, January 9, 2010 at 1:32pm.

Can you help see if I am arriving at the right answers?

1. F(x) =5x^2-2x
F (0), I got o
F (-1) I got 7
F (2) I got 16

2. -0.4x<-16
I got x>40

3. 8x-(5x+7) =14
My answer: 7/3

4. -19<=3x-8<=-7
My answer: -11/3<=x<=3

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