Mathematics, 01.10.2019 12:30, mandylo5418
Afirecracker shoots up from a hill 145 feet high with an initial speed of 80 feet per second. using the formula h(t) = -16t2 + vt + s, approximately how long will it take the firecracker to hit the ground?
a. 13 seconds b. 11 seconds c. 9 seconds d. 6 seconds
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