Afirecracker shoots up from a hill 140 feet high, with an initial speed of 100 feet per sound. using the formula h(t) = -16t2 + be + s, approximately how long will it take the firecracker to hit the ground? a.) 5 secs b.) 7 secsc.) 9 secsd.) 11 secs

Most likely C it would take 9 secs.

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.

answer: sherk

step-by-step explanation:

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