Aflare is launched from a life raft with an initial velocity of 192 ft/sec. how many seconds will it take for the flare to return to the sea if h=192t-16t^2h=192t−16t 2 represents the height of the flare in feet above the sea tt sec after it is launched?

12 seconds

Step-by-step explanation:

The given function is

where h represents the height of the flare in feet above the sea t sec after it is launched.

We need to find the time taken by flare to return to the sea. At sec level the height of flare is 0.

Substitute h=0 in the given function.

Using zero product property we get

It means at t=0 and t=12 the flare is at sea level.

The time taken by flare to return to the sea is

Therefore, the time taken by flare to return to the sea is 12 seconds.

d) 48

step-by-step explanation:

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