NEED HELP ASAP. WILL FAN AND MEDAL.
A firecracker shoots up from a hill 150 feet high, with an initial speed of 110 feet per second. Using the formula H(t) = -16t^2 + vt + s, approximately how long will it take the firecracker to hit the ground?
Eight seconds
Nine seconds
10 seconds
11 seconds

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@pooja195 @Concentrationalizing

Ok, can you walk me through it? :)

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