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carlosegoFor this case we have the following encuacion: h (t) = - 16t ^ 2 + 25t + 3 We match zero: -16t ^ 2 + 25t + 3 = 0 Solving the polynomial we have: t1 = -0.11197537049727824 t2 = 1.6744753704972783 Taking the positive root we have: t = 1.67 s The height for t = 1 is: h (1) = - 16 * (1) ^ 2 + 25 * (1) +3 h (1) = 12 feet Answer: The balloon will hit the ground in: t = 1.67 s the height will be at t = 1 second: h (1) = 12 feet