Santa claus loves to drop presents out of his sled during christmas. the height above the ground of one present after t seconds was given by the function h(t) = -16t^2 - 20t + 800. determine when the present was 300 feet above the ground. determine how many seconds passed before the present hit the ground.

The present was 300 feet above ground 5 seconds after being thrown.

6.47 seconds passed before the present hit the ground.

Step-by-step explanation:

We have the following quadratic function

Which determines the height of the present.

Determine when the present was 300 feet above the ground.

This is when . So

This is and . There are no negative time instants. So the present was 300 feet above ground 5 seconds after being thrown.

Determine how many seconds passed before the present hit the ground.

This is t when

6.47 seconds passed before the present hit the ground.

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