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Mary, a human cannonball, is shot from a cannon. Her height, in metres, after launch is given by the equation h(t) = -2.5t2 +
Mary, a human cannonball, is shot from a cannon. Her height, in metres, after launch is given by the equation h(t) = -2.5t2 + 27t + 21.5. What is her height at t = 8 s? m Round to two decimal places h?
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