Posted by Maddison on Monday, June 13, 2011 at 9:17pm.
14.9 is correct.
In this number, 14.86, the 8 is in the tenths place. Since 6 is more than 5, you round up to 14.9.
* The direction each parabola opens
* The vertex of each parabola
y = x2 - 2x
y = -2x2 + 4x - 3
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