Solve the following problem involving a quadratic equation. Round to the nearest tenth if necessary.If h = -16t2 + 160t represents the height of a firework, in feet, t seconds after is was fired, when will the firework be 400 feet high?
A. The firework will be 400 feet high 5 sec after being fired.
B. The firework will be 400 feet high 25 sec after being fired.
C. The firework will be 400 feet high -5 sec after being fired.
D. The firework will be 400 feet high 80 sec after being fired.
Answer: A
Mathematics
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