Analyze Information The fastest first-round time for the women's 100-meter hurdles in the Olympics was set in 2012 at 12.54 seco
1 answer:
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Answer:
The correct option is 3.
Step-by-step explanation:
The vertex form of a parabola is
.... (1)
where a, h, and k are integers, and interpret the vertex of f(t). (h,k) is the vertex of the parabola.
The given function is
It can be written as
If an expression is defined as , then we need to add
to make it perfect square.
In the expression the value of b is -2. So, we nned to add and subtract
in the parenthesis.
.... (2)
The vertex form of the parabola is .
From (1) and (2), we get h=1 and k=2. It means the vertex of the parabola is (1,2). Vertex of upward parabola is point of minima. So the minimum height of the roller coaster is 2 meters from the ground.
Therefore the correct option is 3.