nments/2145221 1.4 Quadratic Equations Attempt 1: 10 attempts remaining. A coin, thrown upward at time
t=0
from an office in the Empire State Building, as height in feet above the ground
t
seconds later given by
h(t)=-16t^(2)+80t+576=-16(t-9)(t+4)
a) From what height is the coin thrown? Include units in your answer. help (units) b) At what time does the coin hit the ground? Include units in your answer. help (units)

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nments/2145221 1.4 Quadratic Equations Attempt 1: 10 attempts remaining. A coin, thrown upward at time

t=0

from an office in the Empire State Building, as height in feet above the ground

t

seconds later given by

h(t)=-16t^(2)+80t+576=-16(t-9)(t+4)

a) From what height is the coin thrown? Include units in your answer. help (units) b) At what time does the coin hit the ground? Include units in your answer. help (units)

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