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A hovercraft takes off from a platform. Its height (in meters), xxx seconds after takeoff, is modeled by: h(x)=-3(x-3)^2+108h(x)=−3(x−3) 2 +108h, left parenthesis, x, right parenthesis, equals, minus, 3, left parenthesis, x, minus, 3, right parenthesis, squared, plus, 108 What is the height of the hovercraft at the time of takeoff?

 Apr 9, 2020
 #1
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69 feet

 Apr 9, 2020
 #2
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x= 0   seconds at takeoff

h = - 3 (0-3)^2 + 108

    = -27 + 108 = 81 ft

 Apr 9, 2020
 #3
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Oops I meant 420 feet

Guest Apr 9, 2020

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