Mathematics, 10.06.2021 15:30, Kekkdkskdkdk

On a windy morning, a hot air balloon starts ascending and flying away from the top of the hill. The altitude, h, in feet, of the ballon x hours after starting its ascent from the hill can be modeled by the function h(x) = -16x^2 + 64x+ 80 Does the parabola open up or down?
Identify the value of the y-intercept.

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On a windy morning, a hot air balloon starts ascending and flying away from the top of the hill. The...