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The function [tex]$h(t)=-16 t^2+28 t+500$[/tex] represents the height of a rock [tex]\(t\)[/tex] seconds after it is propelled by a slingshot.

What does [tex]$h(3.2)$[/tex] represent?

A. The height of the rock 3.2 seconds before it reaches the ground.
B. The time it takes the rock to reach the ground, or 3.2 seconds.
C. The time it takes the rock to reach a height of 3.2 meters.
D. The height of the rock 3.2 seconds after it is propelled.


Sagot :

To solve this problem, we need to understand the significance of evaluating [tex]\( h(t) \)[/tex] at [tex]\( t = 3.2 \)[/tex].

The function [tex]\( h(t) = -16 t^2 + 28 t + 500 \)[/tex] represents the height of a rock [tex]\( t \)[/tex] seconds after it is propelled by a slingshot.

When we substitute [tex]\( t = 3.2 \)[/tex] into this function, we are calculating the height of the rock 3.2 seconds after it is launched. Specifically:
[tex]\[ h(3.2) \][/tex]
This calculation gives us the height of the rock at that specific time.

After performing the calculation, we find that:
[tex]\[ h(3.2) = 425.76 \][/tex]

This means that 3.2 seconds after the rock is propelled, its height is 425.76 meters. Therefore, [tex]\( h(3.2) \)[/tex] represents:

The height of the rock 3.2 seconds after it is propelled.