SOLUTION: The function F(T) = -5T^2 + 10T + 40 models the height of a rocket shot into the air from a platform, where is the height of the rocket from the ground, in metres, and t is the ti

Question 1158978: The function F(T) = -5T^2 + 10T + 40 models the height of a rocket shot into the air from a platform, where
is the height of the rocket from the ground, in metres, and t is the time in seconds
a. when does the rocket land?
b. what is the maximum height the rocket reaches?
c. At what time(s) is the rocket 25m above the ground?
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