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A firework is launched from a height of 2 feet with an initial velocity of 120 feet per second

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SHOW WORK). A firework is launched from a height of 2 feet with
an initial velocity of 120 feet per second. The height h of the firework (measured in feet) at t seconds after launch is given by h(t) = -16t 2 + 120t + 2.

22A. How many seconds after launch does the firework attain maximum height? (exact answer)

22B. What is the maximum height? (exact answer)

(show work)

 
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