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A stunt pilot is testing a new plane. The equation that models his height over time is f(x)=15x^2 -195x +950, where x is his the time in seconds and (fx) is his height in metres. Determine when the pilot is below 500 metres.

Do i sub in 500 metres for f(x)?

  • Math -

    Yes, then solve for x.

    That will tell you when the height is at 500m. There should be two values for x. Since the parabola opens up, f(x) will be less than 500 between those two values.

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