Answer
20 feet
Work Step by Step
$d(t)=-16t^2+30t+6$
$t=1$
$d(t)=-16t^2+30t+6$
$d(1)=-16*1^2+30*1+6$
$d(1)=-16*1+30+6$
$d(1)=-16+36$
$d(1)=20$
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