by Paul Sperry <plsperry@[EMAIL PROTECTED]
>
Apr 7, 2008 at 04:48 PM
In article
<d29292fc-d848-42c1-b055-6fb1402c7846@[EMAIL PROTECTED]
>, Jim
<MyrskyVaris@[EMAIL PROTECTED]
> wrote:
> Hello
>
> Please help me with the correct approach to the solution for (2x-1)(x
> +3)<=9 .
>
> We get multiple choice answers, like 1) x <= -4 or x >= 3/2 or 2) -4
> <= x <= 3/2
>
> What approach do I use?
>
> What is this type of question called?
>
> Thank you.
>
> Jim
You think to yourself:
"Hmm. (2x - 1)(x + 3) is a quadratic with a positive x^2 term so it is
an upward opening parabola. I'm being asked for the part that lies
below the line y = 9. So, if either of the answers is correct, it must
be answer 2."
It is a "Look before you leap" question.
--
Paul Sperry
Columbia, SC (USA)
