NASA launches a rocket at
t
=
0
seconds. Its height, in meters above sea-level, as a function of time is given by:
h
(
t
)
=

4.9
t
2
+
166
t
+
248
.
Round your answers to 1 decimal place.

a. How many seconds does it take for the rocket to reach its maximum height?

b. What is the maximum height in meters?



Answer :

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