Mathematics, 10.12.2020 18:00 ryanfish6106

A firework's distance d meters from the ground is given by d=-1.5^2 + 25t, where t is the number of seconds after the firework has been lit.
a. How many seconds have passed since the firework was lit when the firework
explodes if it explodes at the maximum height of its path?
b. What is the height of the firework when it explodes?

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