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Questions  >>  SAT  >>  Math  >>  Quadratic Equations
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A construction working repairing a window tosses a tool to his partner across the street. The height of the tool above the ground is modelled by the quadratic function $h(t)=-5t^2+20t+25$, where $h(t)$ is in metres and $t$ is the time in seconds, after the toss. <br><br> QUESTION: If the path of the tools height were graphed, where would the axis of symmetry be ?

$\begin{array}{1 1} (a)\;t=1 \\(b)\;t=-1\\(c)\;t=2\\(d)\;t=-2\end{array}$

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