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AysviL [449]
3 years ago
9

A model rocket is launched from a raised platform at a speed of 144 feet per second. Its height in feet is given by h(t) = -16t

2 + 144t + 20 (t = seconds after launch). After how many seconds does the object reach its maximum height? 20 seconds
6.5 seconds
2.25 seconds
4.5 seconds
Mathematics
1 answer:
Temka [501]3 years ago
4 0
I think its 4.5 seconds
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Answer:

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