A model rocket takes off from an elevated launch pad 9 feet above the ground. The rocket’s elevation follows the function h = −2t2 + 12t + 9, where h represents the height after t seconds. Which of the following ordered pairs (t, h) could be the rocket’s height at a given time?Indicate all possible values.
A.(1, 19)
B.(2.5, 24.5)
C.(3, 28)
D.(4, 25)
E.(5.5, 14.5)
F.(6, 9)
G.(7, 1)
我的答案：
A model rocket takes off from an elevated launch pad 9 feet above the ground. The rocket’s elevation follows the function h = fff\(-2t^2\)/fff + 12t + 9, where h represents the height after t seconds. Which of the following ordered pairs (t, h) could be the rocket’s height at a given time?Indicate all possible values.
