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NO LINKS! Please help me with this problem #3​

NO LINKS! Please help me with this problem #3​-example-1

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Answer:

b) f(x) = -16x² + 8x + 30

Explanation:

When a ball is thrown, its path of motion can be modelled as a parabola that opens downwards.

The graph of a quadratic equation f(x) = ax² + bx + c is a parabola.

  • If a > 0, the parabola opens upwards.
  • If a < 0, the parabola opens downwards.

Therefore, f(x) = -16x² + 8x + 30 could potentially model the time (in seconds) it takes a ball tossed from a window to touch the ground, as its graph is a parabola that opens downwards.

If this function was used to model the scenario, the height of the window above the ground would be the y-intercept (30 feet), and the time when the ball touched the ground would be the positive x-intercept (approx 1.64 s).

NO LINKS! Please help me with this problem #3​-example-1
User Geeko
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