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If t is a real number, what is the maximum possible value of the expression -t^2 + 18t - 4?

 Feb 2, 2022
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Dome shaped parabola      max occurs at   t = - b/ 2a = - 18/(2*(-1)) = t = 9

 

sub in t = 9 into the equation to find the max value of the expression ......

 Feb 2, 2022

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